JPH0971889A - Electrolyzing functional element and its production - Google Patents
Electrolyzing functional element and its productionInfo
- Publication number
- JPH0971889A JPH0971889A JP7267260A JP26726095A JPH0971889A JP H0971889 A JPH0971889 A JP H0971889A JP 7267260 A JP7267260 A JP 7267260A JP 26726095 A JP26726095 A JP 26726095A JP H0971889 A JPH0971889 A JP H0971889A
- Authority
- JP
- Japan
- Prior art keywords
- polymer electrolyte
- solid polymer
- electrolyte membrane
- base materials
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
- B01D53/326—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 in electrochemical cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
- C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Drying Of Gases (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Inert Electrodes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、固体高分子電解
質膜を用いた電解機能素子及びその製造方法に関する。TECHNICAL FIELD The present invention relates to an electrolytic functional element using a solid polymer electrolyte membrane and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】図１４は例えば藤田らによって発明され
た特開昭６０−１１４３２５号公報や特開昭６１−２１
６７１４号公報に示された除湿素子等への応用が可能な
電解機能素子の構成図であり、電解機能素子を気中の水
蒸気を除去する応用例として示したものである。図１４
において、１は陽極、２は陰極、３は固体高分子電解質
膜、４は集電体、５は除湿室、６は外部直流電源であ
る。電解機能素子の利用例としては、例えば電気化学協
会第５９回大会講演要旨集Ｐ３６（山内他、講演番号３
Ａ３１、平成４年３月１９日発行）に半密閉式電子機器
内の結露防止のための適用が記載されている。固体高分
子電解質膜３としては、例えばデュポン（Ｄｕ Ｐｏｎ
ｔ）社製のナフィオン（Ｎａｆｉｏｎ）−１１７などが
用いられており、その公称厚みは約１７０μｍである。
固体高分子電解質膜３の表裏には、例えば鳥飼らによっ
て提案された無電解メッキ法（特開昭５７−１３４５８
６号公報）などの公知の方法を用いて白金メッキが施さ
れ、白金メッキしたエキスパンディドチタンやタンタル
メッシュなどを集電体４に用いて、膜−電極接合体を挟
み、樹脂製の枠などにマウントし、接着剤などで周囲を
固定、ガスシールして、外部直流電源６との電気的接続
を行って構成されている。2. Description of the Related Art FIG. 14 shows, for example, JP-A-60-114325 and JP-A-61-21 invented by Fujita et al.
FIG. 6 is a configuration diagram of an electrolytic functional element that can be applied to the dehumidifying element and the like disclosed in Japanese Patent No. 6714, and shows the electrolytic functional element as an application example for removing water vapor in the air. FIG.
In the above, 1 is an anode, 2 is a cathode, 3 is a solid polymer electrolyte membrane, 4 is a current collector, 5 is a dehumidifying chamber, and 6 is an external DC power supply. As an example of the use of the electrolytic function element, for example, the Electrochemical Society 59th Annual Conference Proceedings P36 (Yamauchi et al., Lecture No. 3)
A31, issued March 19, 1992) describes application for prevention of dew condensation in a semi-enclosed electronic device. As the solid polymer electrolyte membrane 3, for example, Du Pont
Nafion-117 manufactured by T. Co. is used, and its nominal thickness is about 170 μm.
On the front and back of the solid polymer electrolyte membrane 3, for example, the electroless plating method proposed by Torikai et al. (JP-A-57-13458).
No. 6) and other known methods, and platinum-plated expanded titanium, tantalum mesh, or the like is used as the current collector 4 to sandwich the membrane-electrode assembly and form a resin frame. It is mounted on, for example, the periphery is fixed with an adhesive or the like, and is gas-sealed to be electrically connected to the external DC power source 6.
【０００３】次に、上述した構成を備える電解機能素子
の動作について説明する。陽極１では、外部直流電源６
の電力供給により、水が電気分解されて式（１）の反応
が起こり、除湿室５の湿度を低下させる。 ２Ｈ2 Ｏ → Ｏ2 ＋ ４Ｈ+ ＋ ４ｅ- （１） このとき、発生する水素イオン（Ｈ+ ）は固体高分子電
解質膜３を通り、また、電子（ｅ- ）は外部回路を通っ
て陰極２に達し、陰極２では式（２）の反応により酸素
を消費して水を発生する。 Ｏ2 ＋ ４Ｈ+ ＋ ４ｅ- → ２Ｈ2 Ｏ （２） また、一部の水素イオン（Ｈ+ ）は、式（３）の反応に
より、水素になる。 ２Ｈ+ ＋ ２ｅ- → Ｈ2 （３） さらに、上記水素イオン（Ｈ+ ）とともに平均３分子程
度の水が陽極１から陰極２へ移動する。したがって、陰
極２では式（２）の反応により生成する水とともに、さ
らに余分の水が陽極１から移動して除湿室５の湿度を低
下させる。Next, the operation of the electrolytic function element having the above-mentioned structure will be described. For the anode 1, an external DC power source 6
By the power supply of 1, the water is electrolyzed and the reaction of the formula (1) occurs, and the humidity of the dehumidifying chamber 5 is lowered. 2H 2 O → O 2 + 4H + + 4e − (1) At this time, generated hydrogen ions (H + ) pass through the solid polymer electrolyte membrane 3, and electrons (e − ) pass through an external circuit to form a cathode. 2, the cathode 2 consumes oxygen by the reaction of the formula (2) to generate water. O 2 + 4H + + 4e − → 2H 2 O (2) Further, some hydrogen ions (H + ) become hydrogen by the reaction of the formula (3). 2H + + 2e − → H 2 (3) Further, together with the hydrogen ions (H + ), about 3 molecules of water move from the anode 1 to the cathode 2. Therefore, in the cathode 2, along with the water generated by the reaction of the formula (2), excess water further moves from the anode 1 to reduce the humidity of the dehumidifying chamber 5.
【０００４】従来の電解機能素子は、以上のように構成
されているので、陽極１および陰極２と集電体４を密着
させるために全体に面圧をかける必要があり、面圧をか
けるための押え板７やボルト８・ナット９などの押え治
具が必要なため、重くなるまたは嵩張るなどの問題点が
あった。Since the conventional electrolytic function element is configured as described above, it is necessary to apply surface pressure to the whole in order to bring the anode 1 and the cathode 2 and the current collector 4 into close contact with each other. Since a holding jig such as the holding plate 7, the bolt 8 and the nut 9 is required, there is a problem that it becomes heavy or bulky.
【０００５】そこで、面圧を常時かけておかなくても陽
極１および陰極２と集電体４を密着させておくことので
きる方法として、この発明と出願人が同じ特開平６−６
３３４３号公報の明細書に記載されているような方法が
発明された。Therefore, as a method of keeping the anode 1 and the cathode 2 and the current collector 4 in close contact with each other without applying a surface pressure all the time, the present invention and the applicant of the present invention are the same.
A method was invented as described in the specification of the 3343 publication.
【０００６】図１５は特開平６−６３３４３号公報の明
細書に記載されている実施例の図である。図１５におい
て、陽極１は白金を有する触媒層１１とステンレス繊維
の多孔質な基材１２とからなり、陰極２は同じく白金を
有する触媒層２１と基材２２とからなる。触媒層１１お
よび２１は薄膜で、３次元的に基材１２および２２の中
に分布しており、図１５ではこの基材１２および２２の
中に３次元的に分布している触媒層１１および２１を波
線で表している。３は上記陽極１と上記陰極２に挟持さ
れ食い込んだ固体高分子電解質膜である。FIG. 15 is a diagram of an embodiment described in the specification of JP-A-6-63343. In FIG. 15, the anode 1 is composed of a catalyst layer 11 containing platinum and a porous base material 12 of stainless fiber, and the cathode 2 is composed of a catalyst layer 21 also containing platinum and a base material 22. The catalyst layers 11 and 21 are thin films and three-dimensionally distributed in the base materials 12 and 22, and in FIG. 15, the catalyst layers 11 and 21 three-dimensionally distributed in the base materials 12 and 22. 21 is indicated by a wavy line. Reference numeral 3 is a solid polymer electrolyte membrane sandwiched between the anode 1 and the cathode 2 and bite into it.
【０００７】白金を有する触媒層１１、２１は、基材１
２、２２に白金粉末と結着剤とからなるペーストを塗布
乾燥して構成したものであるが、白金粉末と樹脂とで混
練薄膜化したものを固体高分子電解質膜３に塗布した
り、あらかじめ固体高分子電解質膜３に無電解メッキ等
により白金めっきして構成されている。The catalyst layers 11 and 21 containing platinum are the base material 1
2 and 22 are formed by applying and drying a paste containing platinum powder and a binder, and a thin and kneaded mixture of platinum powder and a resin is applied to the solid polymer electrolyte membrane 3 in advance. The solid polymer electrolyte membrane 3 is platinum-plated by electroless plating or the like.
【０００８】この電解機能素子の製造方法としては、触
媒層１１、２１を塗布乾燥したステンレス繊維からなる
多孔質な基材１２、２２を固体高分子電解質膜３の表裏
に配置して、１９０℃、５０ｋｇｆ／ｃｍ2 の条件でホ
ットプレスするという方法が用いられている。走査型電
子顕微鏡による一部サンプルの断面の観察から、基材１
２、２２に固体高分子電解質膜３が食い込むとともに触
媒層１１、２１も固体高分子電解質膜３に５０μｍ近く
食い込んでおり、しかも触媒層１１、２１は変形して３
次元的に凹凸状に分布していることが確認されている。As a method for manufacturing this electrolytic functional element, porous base materials 12 and 22 made of stainless fiber, on which catalyst layers 11 and 21 have been applied and dried, are arranged on the front and back of the solid polymer electrolyte membrane 3, and the temperature is set to 190 ° C. The method of hot pressing is used under the conditions of 50 kgf / cm 2 . From the observation of the cross section of a part of the sample with a scanning electron microscope, the base material 1
The solid polymer electrolyte membrane 3 bites into 2 and 22, and the catalyst layers 11 and 21 also bite into the solid polymer electrolyte membrane 3 by about 50 μm, and the catalyst layers 11 and 21 are deformed to 3
It has been confirmed that the distribution is uneven in a three-dimensional manner.
【０００９】このような構造の電解機能素子には、図１
４の従来例のような押え治具が不要であり、構造が簡単
化できた。しかし、長時間の寿命安定性について調べた
ところ、徐々に基材１２、２２がはがれ易くなり、性能
が低下する欠点があることが判明した。また、この原因
として、触媒層１１、２１に存在する触媒粒子が離型剤
として働いていること、触媒層１１、２１に存在する触
媒粒子の近傍に水分が溜って、基材１２、２２がよりは
がれ易くしていることなどが分った。陽極１と基材１２
あるいは陰極１と基材１１がはがれると、集電がなされ
なくなり、もはや電解機能素子として機能しなくなる。The electrolytic functional element having such a structure is shown in FIG.
The pressing jig as in the conventional example of No. 4 is unnecessary, and the structure can be simplified. However, when the long-term life stability was investigated, it was found that the base materials 12 and 22 gradually became easy to peel off, resulting in a decrease in performance. In addition, as the cause, the catalyst particles existing in the catalyst layers 11 and 21 act as a release agent, and the water is accumulated in the vicinity of the catalyst particles existing in the catalyst layers 11 and 21, so that the base materials 12 and 22 are formed. I found that it was easier to peel off. Anode 1 and substrate 12
Alternatively, when the cathode 1 and the base material 11 are peeled off, current collection is stopped and the electrolytic function element no longer functions.
【００１０】[0010]
【発明が解決しようとする課題】従来の電解機能素子
は、以上のように構成されているので、図１４に示す構
成の場合は、陽極１および陰極２と集電体４を密着させ
るために全体に面圧をかける必要があり、面圧をかける
ための押え板７やボルト８・ナット９などの押え治具が
必要なため、重くなる、嵩張るなどの問題点があった。
また、これを改良した図１５に示す構成の従来例では、
陽極１と陰極２の触媒層１１、２１を基材１２、２２と
共に固体高分子電解質膜３の内部にまで食い込んだ構成
のものが用いられていたが、触媒層１１、２１に存在す
る触媒粒子の近傍に水分が溜ったりして徐々に基材１
２、２２がはがれやすくなり、性能が低下するなどの欠
点があった。Since the conventional electrolytic function element is configured as described above, in the case of the configuration shown in FIG. 14, in order to bring the anode 1 and the cathode 2 and the current collector 4 into close contact with each other. Since it is necessary to apply a surface pressure to the whole and a pressing jig such as a pressing plate 7 and bolts 8 and nuts 9 for applying the surface pressure is necessary, there are problems such as being heavy and bulky.
Further, in the conventional example having the configuration shown in FIG.
Although the catalyst layers 11 and 21 of the anode 1 and the cathode 2 are penetrated into the solid polymer electrolyte membrane 3 together with the substrates 12 and 22, the catalyst particles present in the catalyst layers 11 and 21 are used. Water gradually accumulates in the vicinity of the base material 1 and gradually
There was a defect that the Nos. 2 and 22 were easily peeled off and the performance was lowered.
【００１１】この発明は上記のような問題点を解消する
ためになされたもので、押え治具を省くことができ、除
湿素子等への応用が可能であり、また、陽極および陰極
の両電極と触媒層および固体高分子電解質膜がはがれに
くい構造の電解機能素子及びその製造方法を得ることを
目的とする。The present invention has been made in order to solve the above-mentioned problems, and a holding jig can be omitted, and the invention can be applied to a dehumidifying element and the like, and both anode and cathode electrodes can be used. It is an object of the present invention to obtain an electrolytic functional element having a structure in which the catalyst layer and the solid polymer electrolyte membrane are difficult to peel off, and a method for manufacturing the same.
【００１２】[0012]
【課題を解決するための手段】この発明に係る電解機能
素子は、固体高分子電解質膜と、複数の貫通穴が形成さ
れていて上記固体高分子電解質膜を挟持するようにして
その表裏に埋め込まれた金属板でなり外部から直流の電
源電圧が供給される電極をなす一対の基材と、この一対
の基材の外側の表面及びこれら基材の各貫通穴の中に存
在する上記固体高分子電解質膜の表面を覆うようにして
形成され外部の気体または液体分子の電解反応を促進さ
せる触媒層とを備えたものである。An electrolytic functional element according to the present invention is a solid polymer electrolyte membrane, and a plurality of through holes are formed in the solid polymer electrolyte membrane so as to sandwich the solid polymer electrolyte membrane between the front and back sides. A pair of base materials which are electrodes made of a metal plate and to which a DC power supply voltage is supplied from the outside, and the above-mentioned solid heights existing on the outer surfaces of the pair of base materials and the through holes of these base materials. The catalyst layer is formed so as to cover the surface of the molecular electrolyte membrane and accelerates the electrolytic reaction of external gas or liquid molecules.
【００１３】また、上記触媒層の外部と接する面には、
透湿性を有しかつ撥水性を有する薄膜が被覆されている
ことを特徴とするものである。Further, on the surface of the catalyst layer that contacts the outside,
It is characterized by being coated with a thin film having moisture permeability and water repellency.
【００１４】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側と上記固体高分子電解質膜に接している内側
とで穴の面積が異なることを特徴とするものである。Further, the through-holes formed in at least one of the pair of base materials have a hole area between the outside which is not in contact with the solid polymer electrolyte membrane and the inside which is in contact with the solid polymer electrolyte membrane. It is characterized by being different.
【００１５】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側から上記固体高分子電解質膜に接している内
側に向かって穴径を絞り、上記固体高分子電解質膜に接
していない外側の穴の面積の方が上記固体高分子電解質
膜に接している内側の穴の面積よりも大きいことを特徴
とするものである。Further, the through hole formed in at least one of the pair of base materials has a hole diameter from the outside not in contact with the solid polymer electrolyte membrane to the inside in contact with the solid polymer electrolyte membrane. It is characterized in that the area of the outer hole not in contact with the solid polymer electrolyte membrane is larger than the area of the inner hole in contact with the solid polymer electrolyte membrane.
【００１６】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いる内側から上記固体高分子電解質膜に接していない外
側に向かって穴径を絞り、上記固体高分子電解質膜に接
していない外側の穴の面積の方が上記固体高分子電解質
膜に接している内側の穴の面積よりも小さいことを特徴
とするものである。Further, the through hole formed in at least one of the pair of base materials has a hole diameter from the inside which is in contact with the solid polymer electrolyte membrane to the outside which is not in contact with the solid polymer electrolyte membrane. It is characterized in that the area of the outer hole which is not in contact with the solid polymer electrolyte membrane is smaller than the area of the inner hole which is in contact with the solid polymer electrolyte membrane.
【００１７】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側から上記固体高分子電解質膜に接している内
側に向かって定められた範囲内では狭めて行きその範囲
を超えると穴径を拡げて行くように開孔されたことを特
徴とするものである。Further, the through hole formed in at least one of the pair of base materials is defined from the outside not in contact with the solid polymer electrolyte membrane to the inside in contact with the solid polymer electrolyte membrane. The hole is narrowed within the range, and the hole diameter is expanded when the range is exceeded.
【００１８】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側と上記固体高分子電解質膜に接している内側
とで穴の面積が等しいことを特徴とするものである。Further, the through holes formed in at least one of the pair of base materials have a hole area between the outside not in contact with the solid polymer electrolyte membrane and the inside in contact with the solid polymer electrolyte membrane. It is characterized by equality.
【００１９】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、穴の内壁に突起を有していること
を特徴とするものである。Further, the through hole formed in at least one of the pair of base materials is characterized in that it has a protrusion on the inner wall of the hole.
【００２０】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、穴の真中が最も膨らんでいるいる
ことを特徴とするものである。Further, the through hole formed in at least one of the pair of base materials is characterized in that the center of the hole is most swollen.
【００２１】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、六角形状でなることを特徴とする
ものである。Further, the through hole formed in at least one of the pair of base materials has a hexagonal shape.
【００２２】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、円形形状でなることを特徴とする
ものである。Further, the through hole formed in at least one of the pair of base materials has a circular shape.
【００２３】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、菱形形状でなることを特徴とする
ものである。Further, the through hole formed in at least one of the pair of base materials has a rhombic shape.
【００２４】また、上記一対の基材の少なくとも一方
は、金属箔に鉛、金、パラジウムのうち少なくとも１つ
の成分の薄膜が被覆されていることを特徴とするもので
ある。At least one of the pair of base materials is characterized in that a metal foil is coated with a thin film of at least one of lead, gold, and palladium.
【００２５】また、上記一対の基材の複数の貫通穴の中
に存在する上記固体高分子電解質膜の一部は、上記固体
高分子電解質膜に接していない外側にまで溢れて凸状に
膨らんでいることを特徴とするものである。Further, a part of the solid polymer electrolyte membrane present in the plurality of through holes of the pair of base materials overflows to the outside not in contact with the solid polymer electrolyte membrane and bulges in a convex shape. It is characterized by being out.
【００２６】また、上記一対の基材の複数の貫通穴の中
に存在する上記固体高分子電解質膜の一部は、穴の内部
に留まり凹状にへこんでいることを特徴とするものであ
る。Further, a part of the solid polymer electrolyte membrane existing in the plurality of through holes of the pair of base materials is characterized in that it remains in the holes and is recessed.
【００２７】また、上記触媒層には、白金触媒粒子およ
び上記固体高分子電解質膜と同一または同等組成の固体
高分子電解質が含まれていることを特徴とするものであ
る。The catalyst layer is characterized by containing platinum catalyst particles and a solid polymer electrolyte having the same or similar composition as the solid polymer electrolyte membrane.
【００２８】また、この発明に係る電解機能素子の製造
方法は、固体高分子電解質膜の表裏に、複数の貫通穴が
形成された金属板でなり外部から直流の電源電圧が供給
される電極をなす一対の基材を埋め込む埋め込み工程
と、上記一対の基材の各貫通穴に存在する上記固体高分
子電解質膜の表面及び上記一対の基材の外側の表面に触
媒を塗布して外部の気体または液体分子の電解反応を促
進させる触媒層を形成する塗布工程とを含むものであ
る。Further, in the method for manufacturing an electrolytic functional element according to the present invention, an electrode made of a metal plate having a plurality of through holes formed on the front and back sides of a solid polymer electrolyte membrane is provided with an external DC power supply voltage. An embedding step of embedding the pair of base materials, and applying a catalyst to the surface of the solid polymer electrolyte membrane present in each through hole of the pair of base materials and the outer surface of the pair of base materials to external gas. Alternatively, it includes a coating step of forming a catalyst layer for promoting an electrolytic reaction of liquid molecules.
【００２９】また、上記埋め込み工程は、上記固体高分
子電解質膜の表裏に、上記一対の基材を該固体高分子電
解質膜が軟化する温度よりも高温でホットプレスして埋
め込むことを特徴とするものである。The embedding step is characterized in that the pair of base materials are embedded in the front and back of the solid polymer electrolyte membrane by hot pressing at a temperature higher than the temperature at which the solid polymer electrolyte membrane softens. It is a thing.
【００３０】また、上記埋め込み工程は、上記固体高分
子電解質膜に該固体高分子電解質膜を膨潤させる溶媒を
吸収させた後、ゲル化した固体高分子電解質膜の表裏に
上記一対の基材をプレスして埋め込むことを特徴とする
ものである。In the embedding step, the solid polymer electrolyte membrane is allowed to absorb a solvent for swelling the solid polymer electrolyte membrane, and then the pair of base materials are placed on the front and back of the gelled solid polymer electrolyte membrane. It is characterized by being pressed and embedded.
【００３１】また、上記溶媒は、有機溶液と水との混合
溶媒であることを特徴とするものである。The above-mentioned solvent is a mixed solvent of an organic solution and water.
【００３２】また、上記埋め込み工程は、上記固体高分
子電解質膜の表裏に配置された一対の基材の外側の表面
に凹凸面を有する板をさらに配置してプレスすることを
特徴とするものである。The embedding step is characterized by further arranging and pressing a plate having an uneven surface on the outer surface of a pair of base materials arranged on the front and back of the solid polymer electrolyte membrane. is there.
【００３３】さらに、上記触媒層の外部と接する表面
に、透湿性を有しかつ撥水性を有する薄膜を被覆する工
程をさらに含むことを特徴とするものである。Further, the method is characterized by further comprising the step of coating the surface of the catalyst layer in contact with the outside with a thin film having moisture permeability and water repellency.
【００３４】[0034]
【発明の実施の形態】以下、図１〜図１１に示す実施の
形態に基づいて従来例と同一または相当部分には同一符
号を付してこの発明の電解機能素子の構成および製造方
法を説明する。まず、図１〜図４に示す実施の形態１〜
４に係る電解機能素子の構成例について説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, based on the embodiments shown in FIGS. 1 to 11, the same or corresponding parts as those of the conventional example will be designated by the same reference numerals to describe the structure and manufacturing method of the electrolytic function element of the present invention. To do. First, the first to the first embodiments shown in FIGS.
A configuration example of the electrolytic function element according to No. 4 will be described.
【００３５】実施の形態１．図１はこの発明の実施の形
態１に係る電解機能素子の構成例を示す断面図である。
同図において、１は陽極、２は陰極、３は固体高分子電
解質膜、５は除湿室、６は外部直流電源、１１と２１は
集電板となる多穴金属板でなる基材、１２と２２は基材
１１と２１の各貫通穴３１と３２を介してはみ出た固体
高分子電解質膜３の表面及び上記基材１１と２１の外側
の表面を覆うようにして形成された触媒層、１３と２３
は触媒層１２と２２の表面を覆うようにして形成された
透湿性−撥水性薄膜で、例えば商品名「ＮＦシート」
（徳山ソーダ製）を用いており、用途によって形成する
場合と形成しない場合がある。Embodiment 1. 1 is a cross-sectional view showing a configuration example of an electrolytic functional element according to Embodiment 1 of the present invention.
In the figure, 1 is an anode, 2 is a cathode, 3 is a solid polymer electrolyte membrane, 5 is a dehumidifying chamber, 6 is an external DC power source, 11 and 21 are base materials made of a multi-hole metal plate serving as a current collector plate, 12 And 22 are catalyst layers formed so as to cover the surface of the solid polymer electrolyte membrane 3 protruding through the through holes 31 and 32 of the base materials 11 and 21 and the outer surface of the base materials 11 and 21, respectively. 13 and 23
Is a moisture-permeable / water-repellent thin film formed so as to cover the surfaces of the catalyst layers 12 and 22, and is, for example, a product name “NF sheet”.
(Made by Tokuyama Soda) is used and may or may not be formed depending on the application.
【００３６】すなわち、図１に示す電解機能素子は、固
体高分子電解質膜３と、複数の貫通穴３１、３２が形成
されていて固体高分子電解質膜３を挟持するようにして
その表裏に埋め込まれた金属板でなり外部直流電源６に
よる電源電圧が供給される電極をなす一対の基材１１、
２１と、この一対の基材１１、２１の外側の表面及びこ
れら基材１１、２１の各貫通穴３１、３２に存在する固
体高分子電解質膜３の表面を覆うようにして形成され外
部の気体または液体分子の電解反応を促進させる触媒層
１２、２２と、この触媒層１２、２２の外部と接する面
に形成された透湿性−撥水性薄膜１３、２３とを備えて
いる。That is, in the electrolytic functional element shown in FIG. 1, the solid polymer electrolyte membrane 3 and a plurality of through holes 31, 32 are formed so that the solid polymer electrolyte membrane 3 is sandwiched and embedded in the front and back. A pair of base materials 11 made of a metal plate and serving as electrodes to which the power supply voltage from the external DC power supply 6 is supplied,
21 and the outside surface of the pair of base materials 11 and 21 and the surface of the solid polymer electrolyte membrane 3 present in the through holes 31 and 32 of the base materials 11 and 21 to form an external gas. Alternatively, it is provided with catalyst layers 12 and 22 that promote the electrolytic reaction of liquid molecules, and moisture-permeable / water-repellent thin films 13 and 23 formed on the surfaces of the catalyst layers 12 and 22 that are in contact with the outside.
【００３７】ここで、各貫通穴３１、３２の大きさは、
図１では拡大して示されているが、実際の大きさは、数
十μｍであり、多穴金属板としての基材１１、１２は厚
さ４０μｍの福田金属箔粉工業社製の電解ニッケルパタ
ーン箔にパラジウムをメッキしたものを用い、固体高分
子電解質膜３としては、デュポン社から市販されている
ナフィオン−１１７を用いた。また、触媒層１２、２２
には、白金黒と、固体高分子電解質３としてアルドリッ
チ社から市販されているナフィオン（Ｎａｆｉｏｎ）溶
液（５重量％、水アルコール混合溶媒）を混合塗布した
ものを用いたが、白金触媒粒子および上記固体高分子電
解質膜３と同一または同等組成の固体高分子電解質が含
まれているものを用いても良い。さらに、基材１１、１
２の電解ニッケルパターン箔にパラジウム以外にも、鉛
または金をメッキしても耐食性が向上することを確認し
た。Here, the size of each through hole 31, 32 is
Although it is enlarged and shown in FIG. 1, the actual size is several tens of μm, and the base materials 11 and 12 as multi-hole metal plates are 40 μm thick electrolytic nickel made by Fukuda Metal Foil & Powder Co., Ltd. A pattern foil plated with palladium was used, and as the solid polymer electrolyte membrane 3, Nafion-117 commercially available from DuPont was used. In addition, the catalyst layers 12, 22
As the solid polymer electrolyte 3, a mixture of platinum black and a Nafion solution (5% by weight, hydroalcohol mixed solvent) commercially available from Aldrich Co. was used as the solid polymer electrolyte. You may use what contains the solid polymer electrolyte of the same or equivalent composition as the solid polymer electrolyte membrane 3. Further, the base materials 11, 1
It was confirmed that the corrosion resistance is improved even when the electrolytic nickel pattern foil of 2 is plated with lead or gold in addition to palladium.
【００３８】また、図１に示す電解機能素子において、
各貫通穴３１、３２は、固体高分子電解質膜３に接して
いない外側と固体高分子電解質膜３に接している内側と
で穴の面積が異なり、固体高分子電解質膜３に接してい
ない外側から内側に向かって穴径を絞り、外側の穴の面
積の方が内側の穴の面積よりも大きくなっている。そし
て、各貫通穴３１、３２の中に存在する固体高分子電解
質膜３の一部は、外側にまで溢れて凸状に膨らんでい
る。In the electrolytic functional element shown in FIG. 1,
Each of the through holes 31 and 32 has a different hole area between the outer side not in contact with the solid polymer electrolyte membrane 3 and the inner side in contact with the solid polymer electrolyte membrane 3, and the outer side not in contact with the solid polymer electrolyte membrane 3. The diameter of the hole is narrowed from the inside to the outside, and the area of the outside hole is larger than the area of the inside hole. Then, a part of the solid polymer electrolyte membrane 3 existing in each through hole 31, 32 overflows to the outside and bulges in a convex shape.
【００３９】図５（ａ）、（ｂ）は多穴金属板でなる基
材１１、２１表面の拡大図であり、同図（ａ）が固体高
分子電解質膜３に接していない外側の表面、同図（ｂ）
は固体高分子電解質膜３と接する内側の表面である。図
において、４１、４３は基材１１、２１の金属部、４
２、４４は基材１１、２１の貫通穴であり、内側の貫通
穴４４よりも外側の貫通穴４２の方が面積が大きくなっ
ている。FIGS. 5 (a) and 5 (b) are enlarged views of the surfaces of the base materials 11 and 21 made of a multi-hole metal plate. FIG. 5 (a) shows the outer surface not in contact with the solid polymer electrolyte membrane 3. , The figure (b)
Is an inner surface in contact with the solid polymer electrolyte membrane 3. In the figure, 41 and 43 are metal parts of the base materials 11 and 21, 4
Reference numerals 2 and 44 are through holes of the base materials 11 and 21, and the area of the outer through hole 42 is larger than that of the inner through hole 44.
【００４０】したがって、この実施の形態１によれば、
固体高分子電解質膜３が基材１１、２１の貫通穴３１、
３２の中に食い込んでおり、その間に触媒粒子が介在し
ていないので、固体高分子電解質膜３と集電板である多
穴金属板でなる基材１１、２１がはがれにくくなると共
に、固体高分子電解質膜３と電極部を構成する基材１
１、２１とを機械的に強固に固定して、より安定した電
解機能素子を得ることができる。Therefore, according to the first embodiment,
The solid polymer electrolyte membrane 3 has through holes 31 in the base materials 11 and 21,
Since the solid polymer electrolyte membrane 3 and the base materials 11 and 21 made of a multi-hole metal plate that is a current collector plate are hard to peel off, the solid high Base material 1 that constitutes the molecular electrolyte membrane 3 and the electrode part
1, 21 can be mechanically and firmly fixed to each other to obtain a more stable electrolytic function element.
【００４１】また、基材１１、２１は、金属箔にパラジ
ウムメッキ、鉛メッキ、または金メッキしたもので構成
するので、基材１１、２１の耐蝕性が増し、基材１１、
２１でのガス発生が抑制されるので、固体高分子電解質
膜３が、よりはがれにくくなる。また、貫通穴３１、３
２に存在する固体高分子電解質膜３の一部が穴の外側に
まで溢れて凸に膨らんでいるので、電極面積を広くとる
ことができ、除湿性能を向上させることができる。Further, since the base materials 11 and 21 are composed of a metal foil plated with palladium, lead plated, or gold, the corrosion resistance of the base materials 11 and 21 is increased, and the base materials 11 and 21 are increased.
Since the gas generation at 21 is suppressed, the solid polymer electrolyte membrane 3 becomes more difficult to peel off. Also, the through holes 31, 3
Since a part of the solid polymer electrolyte membrane 3 existing in 2 overflows to the outside of the hole and bulges convexly, the electrode area can be increased and the dehumidification performance can be improved.
【００４２】また、触媒層１２、２２に白金触媒粒子お
よび固体高分子電解質が含まれているので、基材１１、
２１の貫通穴３１、３２の中の固体高分子電解質膜３表
面および基材１１、２１表面の触媒層１２、２２の白金
触媒粒子を結着させ、電子的およびイオン的な導電性を
維持させることができる。さらに、陽極１と陰極２の外
部気体と接触する面が透湿性を有しかつ撥水性を有する
薄膜１３、２３で被覆されているので、電極反応面が汚
染されず、非通電時の結露による局部電池腐食等を抑制
することができる。Further, since the catalyst layers 12 and 22 contain the platinum catalyst particles and the solid polymer electrolyte, the base material 11,
The platinum catalyst particles of the surface of the solid polymer electrolyte membrane 3 in the through holes 31 and 32 of 21 and the catalyst layers 12 and 22 of the surfaces of the substrates 11 and 21 are bound to maintain electronic and ionic conductivity. be able to. Furthermore, since the surfaces of the anode 1 and the cathode 2 that come into contact with the external gas are covered with the moisture-permeable and water-repellent thin films 13 and 23, the electrode reaction surface is not contaminated, and dew condensation occurs when no current is applied. It is possible to suppress local battery corrosion and the like.
【００４３】実施の形態２．次に、図２はこの発明の実
施の形態２に係る電解機能素子の構成例を示す断面図で
ある。図２において、図１に示す実施の形態１と同一ま
たは相当部分には同一符号を付してその説明は省略す
る。図２に示す実施の形態２では、図１に示す実施の形
態１と比較して、基材１１、２１に形成された貫通穴３
１、３２を、固体高分子電解質膜３に接している内側か
ら固体高分子電解質膜３に接していない外側に向かって
穴径を絞り、固体高分子電解質膜３に接していない外側
の穴の面積の方が固体高分子電解質膜３に接している内
側の穴の面積よりも小さくしたものである。Embodiment 2 Next, FIG. 2 is a sectional view showing a configuration example of an electrolytic functional element according to Embodiment 2 of the present invention. In FIG. 2, the same or corresponding parts as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. The second embodiment shown in FIG. 2 is different from the first embodiment shown in FIG. 1 in that the through holes 3 formed in the base materials 11 and 21.
The holes 1 and 32 are narrowed from the inner side in contact with the solid polymer electrolyte membrane 3 toward the outer side not in contact with the solid polymer electrolyte membrane 3 so that the outer holes not in contact with the solid polymer electrolyte membrane 3 are The area is smaller than the area of the inner hole in contact with the solid polymer electrolyte membrane 3.
【００４４】このように構成することにより、固体高分
子電解質膜３に接している内側から固体高分子電解質膜
３に接していない外側にかけて食い込んでいる固体高分
子電解質膜３がよりはがれにくくなり、固体高分子電解
質膜３と電極部を構成する基材１１、２１とを機械的に
さらに強固に固定することができると共に、触媒層１
２、２２表面部分の電界強度を大きくして電極間の印加
電圧を小さくすることができ、かつ素子の電圧特性を改
善することができる。With this structure, the solid polymer electrolyte membrane 3 that bites from the inside that is in contact with the solid polymer electrolyte membrane 3 to the outside that is not in contact with the solid polymer electrolyte membrane 3 becomes more difficult to peel off, The solid polymer electrolyte membrane 3 and the base materials 11 and 21 forming the electrode portion can be mechanically and more firmly fixed, and the catalyst layer 1
It is possible to increase the electric field strength of the surface portions of the electrodes 22 and 22 to reduce the applied voltage between the electrodes and improve the voltage characteristics of the device.
【００４５】実施の形態３．次に、図３はこの発明の実
施の形態３に係る電解機能素子の構成例を示す断面図で
ある。図３において、図１に示す実施の形態１と同一ま
たは相当部分には同一符号を付してその説明は省略す
る。図３に示す実施の形態３では、図１に示す実施の形
態１と比較して、基材１１、２１に形成された貫通穴３
１、３２を、穴の内壁に突起を有する構造としたもの
で、貫通穴３１、３２は、固体高分子電解質膜３に接し
ていない外側から固体高分子電解質膜３に接している内
側に向かって定められた範囲内では狭めて行きその範囲
を超えると穴径を拡げて行くように開孔されている。Embodiment 3 Next, FIG. 3 is a sectional view showing a configuration example of an electrolytic functional element according to Embodiment 3 of the present invention. In FIG. 3, the same or corresponding parts as those of the first embodiment shown in FIG. 1 are designated by the same reference numerals, and the description thereof will be omitted. In the third embodiment shown in FIG. 3, as compared with the first embodiment shown in FIG. 1, the through holes 3 formed in the base materials 11 and 21.
1, 32 has a structure having protrusions on the inner wall of the hole, and the through holes 31, 32 are directed from the outer side not in contact with the solid polymer electrolyte membrane 3 to the inner side in contact with the solid polymer electrolyte membrane 3. The hole is narrowed within the range defined by the above, and the hole diameter is expanded when it exceeds the range.
【００４６】このように構成することにより、基材１
１、２１に形成された貫通穴３１、３２に食い込んでい
る固体高分子電解質膜３が実施の形態１及び２よりもさ
らにはがれにくくなり、固体高分子電解質膜３と電極部
を構成する基材１１、２１とを機械的にさらに強固に固
定することができる。With this structure, the base material 1
The solid polymer electrolyte membrane 3 biting into the through holes 31 and 32 formed in Nos. 1 and 21 becomes more difficult to peel off than in the first and second embodiments, and the base material forming the solid polymer electrolyte membrane 3 and the electrode part 11 and 21 can be mechanically and more firmly fixed.
【００４７】実施の形態４．次に、図４はこの発明の実
施の形態４に係る電解機能素子の構成例を示す断面図で
ある。図４において、図１に示す実施の形態１と同一ま
たは相当部分には同一符号を付してその説明は省略す
る。図４に示す実施の形態４では、図１に示す実施の形
態１と比較して、基材１１、２１に形成された貫通穴３
１、３２を、固体高分子電解質膜３に接していない外側
と固体高分子電解質膜３に接している内側とで穴の面積
が等しい構造としたものである。Embodiment 4 Next, FIG. 4 is a sectional view showing a configuration example of an electrolytic functional element according to Embodiment 4 of the present invention. 4, parts that are the same as or correspond to those in the first embodiment shown in FIG. 1 are assigned the same reference numerals, and descriptions thereof will be omitted. In the fourth embodiment shown in FIG. 4, as compared with the first embodiment shown in FIG. 1, the through holes 3 formed in the base materials 11 and 21.
Nos. 1 and 32 have a structure in which the areas of the holes that are not in contact with the solid polymer electrolyte membrane 3 are the same as the areas of the holes that are in contact with the solid polymer electrolyte membrane 3.
【００４８】固体高分子電解質膜３と電極部を構成する
基材１１、２１とを機械的に強固に固定する要求がない
場合には、このように平行な貫通穴３１、３２を形成す
るようにして良い。If there is no requirement to mechanically and firmly fix the solid polymer electrolyte membrane 3 and the base materials 11 and 21 constituting the electrode portion, such parallel through holes 31 and 32 are formed. You can
【００４９】図６と図７は上述した実施の形態１〜４に
係る電解機能素子の電極構成を極端に比較して示す電極
構成図と図６に示す貫通穴の外面に沿った点Ａ〜Ｂ間の
触媒層表面に形成される電界強度をそれそれ示す特性図
を示すものである。なお、図６では触媒層１２、２２を
説明の都合上平坦にして示している。図６に示すよう
に、外側に向かって絞った貫通穴の形状の場合（実施の
形態２）の点Ｂにおける電界強度は、図７に示す如く、
０．３×１０-2Ｖ／μｍであり、外側に向かって開いた
貫通穴の形状の場合（実施の形態１）の点Ｂにおける電
界強度０．２×１０-2Ｖ／μｍに比べて１．５倍の電界
強度となっている。これから、電界強度と印加電圧は比
例関係にあるため、所定の電界強度を得ようとすると
き、実施の形態２の場合の両極への印加電圧は実施の形
態１の場合に比べて１／１．５に低減できる。すなわ
ち、貫通穴の穴形状を表面に電界集中する形状にするこ
とによって素子の電圧特性を改善している。6 and 7 are electrode configuration diagrams showing an extreme comparison of the electrode configurations of the electrolytic functional elements according to the above-described first to fourth embodiments, and points A to A along the outer surface of the through hole shown in FIG. It is a characteristic diagram showing the electric field strength formed on the surface of the catalyst layer between B. In FIG. 6, the catalyst layers 12 and 22 are shown flat for convenience of explanation. As shown in FIG. 6, the electric field strength at the point B in the case of the shape of the through hole squeezed outward (Embodiment 2) is as shown in FIG.
0.3 × 10 −2 V / μm, which is higher than the electric field intensity of 0.2 × 10 −2 V / μm at the point B in the case of the shape of the through hole opened toward the outside (Embodiment 1). The electric field strength is 1.5 times. From this, since the electric field strength and the applied voltage are in a proportional relationship, when a predetermined electric field strength is to be obtained, the applied voltage to both electrodes in the case of the second embodiment is 1/1 compared to the case of the first embodiment. It can be reduced to .5. That is, the voltage characteristic of the element is improved by forming the shape of the through hole so that the electric field is concentrated on the surface.
【００５０】図示のごとく、実施の形態２は、実施の形
態１と比較して触媒層１２、２２近傍の電界強度を大き
くするために、貫通穴３１、３２の穴径を外側（触媒層
１２、２２側）に向って絞り、また、実施の形態３は、
触媒層１２、２２近傍の電界強度を大きくすると共に、
電極部を構成する基材１１、２１と固体高分子電解質膜
３とを機械的に強固に固定するために、貫通穴３１、３
２の穴径を外側に向かって絞ると共に、外面近傍で局部
的に穴径を外側に向かって大きくして、穴内壁に突起を
形成するようにし、電極部を構成する基材１１、２１と
固体高分子電解質膜３を機械的に強固に固定している。
なお、実施の形態４は、平行な貫通穴３１、３２を形成
した例を示したもので、電極部を構成する基材１１、２
１と固体高分子電解質膜３とを機械的に強固に固定する
要求の大きくない場合は実施の形態４に示すような構成
にしても良い。このような電極構成によれば、電界強度
の大きさは、図７に示すごとく、実施の形態２、実施の
形態４、実施の形態３、実施の形態１の順となる。As shown in the figure, in the second embodiment, in order to increase the electric field strength in the vicinity of the catalyst layers 12 and 22 as compared with the first embodiment, the hole diameters of the through holes 31 and 32 are set outside (the catalyst layer 12). , 22 side), and in the third embodiment,
While increasing the electric field strength near the catalyst layers 12 and 22,
Through holes 31, 3 are provided to mechanically and firmly fix the base materials 11 and 21 forming the electrode portion and the solid polymer electrolyte membrane 3.
The hole diameter of No. 2 is narrowed toward the outside, and the hole diameter is locally increased near the outer surface toward the outside so as to form a protrusion on the inner wall of the hole. The solid polymer electrolyte membrane 3 is mechanically firmly fixed.
In addition, Embodiment 4 shows an example in which the parallel through holes 31 and 32 are formed, and the base materials 11 and 2 that form the electrode portion are shown.
If there is not a strong demand for mechanically firmly fixing the solid polymer electrolyte membrane 1 and the solid polymer electrolyte membrane 3, the configuration shown in Embodiment 4 may be adopted. With such an electrode configuration, the magnitude of the electric field strength is in the order of the second embodiment, the fourth embodiment, the third embodiment, and the first embodiment, as shown in FIG.
【００５１】実施の形態５．次に、この発明に係る電解
機能素子の製造方法について説明する。図８はホットプ
レスを行う前の部材を並べた状態の断面図を示したもの
で、図１と同様に、貫通穴３１、３２を拡大して示して
いる。図８において、５０は固体高分子電解質素子３の
表裏に配置された一対の基材１１、２１の外側の表面に
配置されるサンドペーパーで、５１がその布部分、５２
が砂の粗粒子があって凹凸のある部分である。Embodiment 5. Next, a method for manufacturing the electrolytic function element according to the present invention will be described. FIG. 8 shows a cross-sectional view of a state in which members before hot pressing are arranged, and similarly to FIG. 1, the through holes 31 and 32 are enlarged and shown. In FIG. 8, 50 is a sandpaper arranged on the outer surface of the pair of base materials 11 and 21 arranged on the front and back sides of the solid polymer electrolyte element 3, and 51 is a cloth portion, 52
Is a part with rough particles of sand and unevenness.
【００５２】これらの部材をホットプレス装置に順次重
ねて配置し、固体高分子電解質素子３が軟化する温度よ
りも高温、例えば１９０℃、５０ｋｇｆ／ｃｍ2 の条件
でホットプレスした。これを１００℃以下に冷却した
後、取り出し、サンドベーパー５０を分離した後、白金
黒と固体高分子電解質として、アルドリッチ社から市販
されているナフィオン溶液（５重量％、水アルコール混
合溶媒）を混合した溶液を刷毛塗りによって貫通穴３
１、３２にしみ出した固体高分子電解質膜３および基材
１１、２１の金属部４１に塗布し、窒素雰囲気中１５０
℃で５分間加熱処理して固体高分子電解質３を溶融さ
せ、触媒を結着させて触媒層１２、２２を形成すると共
に、その上に触媒層１２と２２の表面を覆うようにして
透湿性−撥水性薄膜１３、２３（図１参照）を形成し
た。These members were placed one on top of the other in a hot pressing machine and hot pressed at a temperature higher than the temperature at which the solid polymer electrolyte element 3 softened, for example 190 ° C. and 50 kgf / cm 2 . This was cooled to 100 ° C. or lower, taken out, and the sand vapor 50 was separated, and then platinum black and a solid polymer electrolyte were mixed with a Nafion solution (5% by weight, a water-alcohol mixed solvent) commercially available from Aldrich. The solution prepared by brushing is applied to the through hole 3
1 and 32 are applied to the solid polymer electrolyte membrane 3 and the metal parts 41 of the base materials 11 and 21, which are extruded in the nitrogen atmosphere.
The solid polymer electrolyte 3 is melted by heating at 5 ° C for 5 minutes, the catalyst is bound to form the catalyst layers 12 and 22, and the surfaces of the catalyst layers 12 and 22 are covered therewith to have moisture permeability. -Water-repellent thin films 13 and 23 (see FIG. 1) were formed.
【００５３】このように、実施の形態５に係る電解機能
素子の製造方法は、固体高分子電解質膜３の表裏に、複
数の貫通穴３１、３２が形成された一対の基材１１、２
１を埋め込む埋め込み工程と、上記一対の基材１１、２
１の各貫通穴３１、３２に存在する上記固体高分子電解
質膜３の表面及び上記一対の基材１１、２１の外側の表
面に触媒を塗布して外部の気体または液体分子の電解反
応を促進させる触媒層１２、２２を形成する塗布工程と
を含むので、固体高分子電解質膜３と多穴金属板でなる
基材１１、２１との間に、はずれの原因になる触媒粒子
を介在させずに、基材１１、２１の穴に固体高分子電解
質膜３を食い込ませることができ、しかも簡単に触媒層
１２、２２を形成し、安価に電解機能素子の製造を行う
ことができる。As described above, in the method of manufacturing the electrolytic functional element according to the fifth embodiment, the pair of base materials 11 and 2 in which the plurality of through holes 31 and 32 are formed on the front and back of the solid polymer electrolyte membrane 3 are used.
1 embedding step, and the pair of base materials 11, 2
A catalyst is applied to the surface of the solid polymer electrolyte membrane 3 present in each of the through holes 31 and 32 of 1 and the outer surface of the pair of base materials 11 and 21 to promote the electrolytic reaction of external gas or liquid molecules. Since it includes a coating step of forming the catalyst layers 12 and 22, the catalyst particles that cause the detachment are not interposed between the solid polymer electrolyte membrane 3 and the base materials 11 and 21 made of a multi-hole metal plate. In addition, the solid polymer electrolyte membrane 3 can be made to bite into the holes of the base materials 11 and 21, and the catalyst layers 12 and 22 can be easily formed, and the electrolytic functional element can be manufactured at low cost.
【００５４】また、上記埋め込み工程は、上記固体高分
子電解質膜３の表裏に、凹凸面を有するサンドペーパー
５０をさらに配置して、上記一対の基材１１、２１を該
固体高分子電解質膜３が軟化する温度よりも高温でホッ
トプレスして埋め込むので、固体高分子電解質膜３の一
部が穴の外側にまで溢れて凸に膨らんでいる構造を作る
ことができ、固体高分子電解質膜３がよりはずれにくく
なり、より安定した性能の電解機能素子が得られる。Further, in the embedding step, sandpaper 50 having an uneven surface is further arranged on the front and back of the solid polymer electrolyte membrane 3 so that the pair of base materials 11 and 21 is attached to the solid polymer electrolyte membrane 3. Since the solid polymer electrolyte membrane 3 is embedded by hot pressing at a temperature higher than the softening temperature, it is possible to form a structure in which a part of the solid polymer electrolyte membrane 3 overflows to the outside of the hole and bulges convexly. Is less likely to come off, and an electrolytic functional element with more stable performance can be obtained.
【００５５】さらに、上記触媒層１２、２２の外部と接
する表面に、透湿性を有しかつ撥水性を有する透湿性−
撥水性薄膜１３、２３を被覆する工程をさらに含むの
で、陽極及び陰極の気体と接触する面が透湿性−撥水性
薄膜１３、２３で被覆されて、電極反応面が汚染され
ず、非通電時の結露による局部電池腐食等を抑制するこ
とができる。Furthermore, the surfaces of the catalyst layers 12 and 22 that come into contact with the outside have moisture permeability and water repellency.
Since the method further includes the step of coating the water-repellent thin films 13 and 23, the surfaces of the anode and the cathode that come into contact with the gas are covered with the moisture-permeable / water-repellent thin films 13 and 23, so that the electrode reaction surface is not contaminated and is not energized. It is possible to suppress local battery corrosion and the like due to dew condensation.
【００５６】上述したようにして製造された電解機能素
子に対して、その後、外部直流電源との接続用の端子と
配線を行った後、樹脂製の枠にはめて接着剤で周辺部を
固定し、ガスシールした。最後に、除湿性能の評価箱に
この電解機能素子を取り付け、次に、全体を恒温恒湿槽
に入れて除湿性能の評価を行った。The electrolytic function element manufactured as described above is then connected to terminals for external DC power supply and wiring, and then fitted in a resin frame to fix the peripheral portion with an adhesive. And gas sealed. Finally, this electrolytic functional element was attached to a dehumidification performance evaluation box, and then the whole was placed in a thermo-hygrostat to evaluate the dehumidification performance.
【００５７】図９は従来の電解機能素子とこの発明の電
解機能素子の除湿性能の評価試験結果である。図９の破
線６１は陰極側の外部大気湿度で恒温恒湿槽で３５℃、
相対湿度８０％に保持されている。なお、印加電圧はＤ
Ｃ３Ｖ〜４Ｖで、相対湿度と流れる電流値をモニターし
た。曲線６２と曲線６３は従来の電解機能素子の除湿性
能を示す除湿室の湿度変化、曲線６４はこの発明の図１
の電解機能素子の除湿性能を示す除湿室の湿度変化であ
る。図において横軸は時間であり、湿度の低下が早いも
の程、除湿性能が高い。従って、実施の形態は従来の電
解機能素子よりも除湿性能が高くなっていることがわか
る。なお、曲線６２の従来の電解機能素子としては、ナ
フィオン−１１７の両面をサンドブラストにより粗面化
し、無電解メッキにより白金を析出させた後、２枚のタ
ンタル製メッシュの集電板ではさんで、押え板などで面
圧をかけたものを用いた。FIG. 9 shows the dehumidification performance evaluation test results of the conventional electrolytic function element and the electrolytic function element of the present invention. The broken line 61 in FIG. 9 indicates the outside atmospheric humidity on the cathode side at 35 ° C. in a constant temperature and humidity chamber.
The relative humidity is maintained at 80%. The applied voltage is D
The relative humidity and the flowing current value were monitored at C3V to 4V. Curves 62 and 63 represent changes in the humidity of the dehumidifying chamber showing the dehumidifying performance of the conventional electrolytic function element, and a curve 64 represents FIG. 1 of the present invention.
3 is a humidity change in the dehumidifying chamber showing the dehumidifying performance of the electrolytic function element of FIG. In the figure, the horizontal axis is time, and the faster the humidity decreases, the higher the dehumidification performance. Therefore, it is understood that the embodiment has higher dehumidification performance than the conventional electrolytic function element. As the conventional electrolytic function element of the curve 62, both surfaces of Nafion-117 are roughened by sandblasting, platinum is deposited by electroless plating, and then sandwiched by two tantalum mesh current collector plates. A pressure plate was used to apply surface pressure.
【００５８】また、曲線６３の従来の電解機能素子とし
ては、図１５の構成のものを用いた。曲線６３の従来の
電解機能素子と曲線６４の実施の形態の電解機能素子の
除湿性能の差は小さかったが、しかし、外部回路を流れ
た電流値は、この発明の実施の形態よりも図１５の構成
の従来例の方がはるかに大きく、この発明の実施の形態
の方が電流効率が高く優れていることが分った。これ
は、多穴金属板でなる基材１１、２１によって固体高分
子電解質膜３が覆われているので、固体高分子電解質膜
３を介しての水の逆拡散（陰極から陽極への水の戻り）
が起こりにくいためと推定される。As the conventional electrolytic function element having the curve 63, the one having the structure shown in FIG. 15 was used. Although the difference in dehumidification performance between the conventional electrolytic function element of curve 63 and the electrolytic function element of the embodiment of curve 64 was small, the current value flowing through the external circuit was smaller than that of the embodiment of the present invention. It has been found that the conventional example having the above-mentioned configuration is much larger, and the embodiment of the present invention is superior in current efficiency. This is because the solid polymer electrolyte membrane 3 is covered with the base materials 11 and 21 made of a multi-hole metal plate, so that the water is reversely diffused through the solid polymer electrolyte membrane 3 (the water from the cathode to the anode is return)
It is presumed that this is unlikely to occur.
【００５９】さらに、図１５の従来例の構成の電解機能
素子とこの発明の実施の形態を長期に運転試験して除湿
性能の安定性を試験した。図１０は長時間の除湿性能の
安定性を試験したもので、曲線６５は図１５の従来例の
構成の電解機能素子の相対湿度の変化、曲線６６はこの
発明の実施の形態の電解機能素子の相対湿度の変化で、
実施の形態の場合、相対湿度が安定していて、安定した
除湿性能が維持されているのに対して、従来例の場合、
相対湿度が徐々に増大して４０００時間付近で急激に増
大しており、除湿性能が低下していることが分る。試験
後の電解機能素子の分解調査の結果、従来例の場合に固
体高分子膜３と集電板４が素子の中央付近を中心に、は
がれかかっていたことが分った。Further, the stability of dehumidification performance was tested by conducting an operation test for a long time on the electrolytic functional element having the configuration of the conventional example of FIG. 15 and the embodiment of the present invention. FIG. 10 shows a test of stability of dehumidification performance for a long time. A curve 65 shows a change in relative humidity of the electrolytic functional element having the configuration of the conventional example shown in FIG. 15, and a curve 66 shows an electrolytic functional element of the embodiment of the present invention. Change in relative humidity of
In the case of the embodiment, relative humidity is stable, while stable dehumidification performance is maintained, whereas in the case of the conventional example,
It can be seen that the relative humidity gradually increased and then drastically increased in the vicinity of 4000 hours, and the dehumidification performance deteriorated. As a result of disassembling and investigating the electrolytic functional element after the test, it was found that in the case of the conventional example, the solid polymer film 3 and the current collector plate 4 were about to come off around the center of the element.
【００６０】実施の形態６．図１１はこの発明の実施の
形態６の構成を示す断面図である。この実施の形態６で
は、図１に示す実施の形態１と異なり、多穴金属板でな
る基材１１、２１の貫通穴３１、３２に固体高分子電解
質膜３の一部が凹状に入っており、触媒層１２、２３及
び透湿性−撥水性薄膜１３、２３も凹状になっている。
貫通穴３１、３２への固体高分子電解質膜３の入り方に
よる除湿性能の違いを調べた所、図１のように凸状に膨
らんでいる場合と、図１１のように凹状にへこんでいる
場合に除湿性能が高くなることが分った。おそらく、凸
または凹になった場合には触媒層１３、２３及び透湿性
−撥水性薄膜１３、２３の表面積が拡大され、電極面積
を広く取ることができて電解反応が向上するためと推定
される。なお、基材１１、２１上の触媒層１３、２３を
取り去った場合には、抵抗が高くなって除湿性能も低下
するなどの影響が見られたので、集電の役割の他に、基
材１１、２１上の触媒層１３、２３についてもある程度
除湿反応に関与していると推定される。また、触媒層１
３、２３として白金黒のみを塗布した場合は、固体高分
子電解質膜３から白金黒が剥がれ落ちてしまった。Embodiment 6 FIG. 11 is a sectional view showing the structure of the sixth embodiment of the present invention. In the sixth embodiment, unlike the first embodiment shown in FIG. 1, a part of the solid polymer electrolyte membrane 3 is recessed in the through holes 31, 32 of the base materials 11, 21 made of a multi-hole metal plate. Thus, the catalyst layers 12 and 23 and the moisture-permeable / water-repellent thin films 13 and 23 are also concave.
When the difference in dehumidification performance depending on how the solid polymer electrolyte membrane 3 enters the through holes 31 and 32 was examined, it was bulged in a convex shape as shown in FIG. 1 and was dented in a concave shape as shown in FIG. It was found that the dehumidification performance was improved in some cases. It is presumed that if the surface becomes convex or concave, the surface areas of the catalyst layers 13 and 23 and the moisture-permeable / water-repellent thin films 13 and 23 are increased, and the electrode area can be increased to improve the electrolytic reaction. It In addition, when the catalyst layers 13 and 23 on the base materials 11 and 21 were removed, the resistance was increased and the dehumidification performance was also decreased. It is estimated that the catalyst layers 13 and 23 on 11 and 21 are also involved in the dehumidification reaction to some extent. Also, the catalyst layer 1
When only platinum black was applied as Nos. 3 and 23, the platinum black was peeled off from the solid polymer electrolyte membrane 3.
【００６１】実施の形態７．次に、図１２（ａ）、
（ｂ）は、それぞれこの発明の実施の形態７の構成を示
す多穴金属板でなる基材１１、２１上の表面の模様であ
り、基材１２、２１の貫通穴４２、４４が必ずしも図５
（ａ）、（ｂ）のような六角形である必要はなく、図１
２（ａ）の円形の貫通穴４２や、図１２（ｂ）のような
菱形の貫通穴４４になる多穴金属板を用いても、はがれ
にくく、除湿性能の高い電解機能素子を得ることができ
た。これらの多穴金属板でなる基材１１、２１は全てニ
ッケル箔であり、表と裏で模様の大きさが異なる。これ
は、このような市販の多穴金属板が、一方の面にのみ感
光液を塗布して穴の模様のネガを介して光を照射して不
溶性に変化させて耐蝕膜とし、電解槽で電解して残りの
部分にニッケルを電析させるという製法を用いているた
めである。Embodiment 7 FIG. Next, as shown in FIG.
(B) is a pattern of the surface on the base materials 11, 21 made of a multi-hole metal plate showing the configuration of the seventh embodiment of the present invention, and the through holes 42, 44 of the base materials 12, 21 are not necessarily shown. 5
It is not necessary to have a hexagonal shape as shown in (a) and (b).
Even if a circular through hole 42 of 2 (a) or a multi-hole metal plate forming a rhombic through hole 44 as shown in FIG. 12 (b) is used, it is possible to obtain an electrolytic functional element that is hard to peel off and has high dehumidification performance. did it. The base materials 11 and 21 made of these multi-hole metal plates are all nickel foils, and the sizes of the patterns are different between the front and back. This is because such a commercially available multi-hole metal plate is coated with a photosensitive solution on only one surface and irradiated with light through the negative of the hole pattern to change it to insoluble to form a corrosion resistant film, This is because a manufacturing method is used in which electrolysis is performed to deposit nickel on the remaining portion.
【００６２】実施の形態８．図１３（ａ）、（ｂ）はそ
れぞれこの発明の実施の形態８の構成を示す多穴金属板
の断面図であり、図１３（ａ）では貫通穴３１に突起３
３が、図１３（ｂ）では貫通穴３１の真中が最も膨らん
でいる盛り上がり部３４がある。機械的なパンチングで
作成した場合に突起３３が生じることがあり、化学的エ
ッチングによって作成した場合には真中が最も膨れ易く
盛り上がり部３４が生じやすい。これらの多穴金属板で
なる基材１１、２１を用いた場合についても、はがれに
くく、除湿性能の高い電解機能素子３を得ることができ
た。Embodiment 8 FIG. 13 (a) and 13 (b) are cross-sectional views of a multi-hole metal plate showing the configuration of Embodiment 8 of the present invention, and in FIG.
In FIG. 13 (b), there is a raised portion 34 in which the center of the through hole 31 is the most swollen. When formed by mechanical punching, protrusions 33 may occur, and when formed by chemical etching, the center is most likely to swell and a raised portion 34 is likely to occur. Also when the base materials 11 and 21 made of these multi-hole metal plates were used, it was possible to obtain the electrolytic functional element 3 that was difficult to peel off and had high dehumidification performance.
【００６３】実施の形態９．次に、この発明の実施の形
態９に係る電解機能素子の製造方法について説明する。
まず、イソプロピルアルコールと水の混合溶媒（重量比
率１：１）をナフィオン−１１７に含浸した。この時、
ナフィオン−１１７は膨潤するとともにゲル化し、豆腐
やプリン状の固形物が簡単に挿入できる状態になる。次
に、図８のように部材を並べ、室温で１０ｋｇｆ／ｃｍ
2 の圧力でプレスして、基材１１、２１の貫通穴３１、
３２に固体高分子電解質膜３の一部を埋め込んだ。８０
℃で乾燥した後、実施の形態５の場合と同様に、白金黒
と固体高分子電解質として、ナフィオン溶液を混合した
溶液を刷毛塗りによって貫通穴にしみ出した固体高分子
電解質膜３および基材の金属部４１に塗布し、窒素雰囲
気中１５０℃で５分間加熱処理して固体高分子電解質３
を溶融させ、触媒を結着させて触媒層１２、２２を形成
した。この製造方法を用いて作成した場合にも、はがれ
にくく、除湿性能の高い電解機能素子を得ることができ
た。Embodiment 9 FIG. Next, a method for manufacturing an electrolytic function element according to Embodiment 9 of the present invention will be described.
First, Nafion-117 was impregnated with a mixed solvent of isopropyl alcohol and water (weight ratio 1: 1). This time,
Nafion-117 swells and gels, so that tofu or pudding-like solids can be easily inserted. Next, the members are arranged as shown in FIG. 8, and 10 kgf / cm at room temperature.
By pressing with a pressure of 2 , the through holes 31 of the base materials 11 and 21,
A part of the solid polymer electrolyte membrane 3 was embedded in 32. 80
After being dried at 0 ° C., as in the case of the fifth embodiment, the solid polymer electrolyte membrane 3 and the base material, in which platinum black and a solid polymer electrolyte, which are Nafion solutions mixed, are extruded into the through holes by brush coating, Of the solid polymer electrolyte 3 by applying it to the metal part 41 of No. 1 and heat-treating at 150 ° C. for 5 minutes in a nitrogen atmosphere
Was melted and the catalyst was bound to form catalyst layers 12 and 22. Even when produced using this manufacturing method, it was possible to obtain an electrolytic functional element that is difficult to peel off and has high dehumidification performance.
【００６４】なお、アルコールやケトンなど有機溶媒単
独でも固体高分子電解質膜３は多少ゲル化して、圧力を
加えれば固いものが挿入できる状態になるが、有機溶媒
と水との混合溶媒の場合に溶媒吸収量が多くなり、ゲル
化が進んで最もやわらかくなるので、この発明の電解機
能素子の製造方法を適用しやすくなる。Even if an organic solvent such as alcohol or ketone is used alone, the solid polymer electrolyte membrane 3 gels to some extent, and a solid substance can be inserted by applying pressure. However, in the case of a mixed solvent of an organic solvent and water, Since the solvent absorption amount increases and gelation progresses and becomes the softest, it becomes easy to apply the method for producing an electrolytic functional element of the present invention.
【００６５】また、基材１１、２１の材質については、
つまり除湿の陰極多穴金属板の材料については、それほ
ど高い耐蝕性は求められないので、ニッケルやステンレ
ス鋼のような材料をメッキを施さずに用いることができ
るが、陽極多穴金属板の材料については、高い耐蝕性が
求められるのでニッケルやステンレス鋼のような材料を
用いる場合にはメッキを施す必要がある。金メッキや白
金メッキは高い耐蝕性があるがコストが高くなるので、
パラジウム、鉛、二酸化鉛のような安価な被膜を形成し
ておくことが望ましい。Regarding the materials of the base materials 11 and 21,
In other words, as for the material of the dehumidified cathode multi-hole metal plate, since not so high corrosion resistance is required, it is possible to use a material such as nickel or stainless steel without plating, but the material of the anode multi-hole metal plate. With respect to, since high corrosion resistance is required, it is necessary to perform plating when using a material such as nickel or stainless steel. Gold plating and platinum plating have high corrosion resistance, but the cost is high, so
It is desirable to form an inexpensive coating such as palladium, lead or lead dioxide.
【００６６】また、固体高分子電解質膜３としては、水
素イオンを伝導するものであればよく、デュポン社のナ
フィオン−１１７、ナフィオン−１１５、ナフィオン−
１１２、ナフィオン−１０５のほか、旭硝子社のフレミ
オン、旭化成社のアシプレックス、ダウケミカル社のＸ
ＵＳ−１３．２０４．１０、などがあげられる。また、
側鎖にスルホン酸基を持つものの他にカルボン酸基を持
つものも用いることができる。The solid polymer electrolyte membrane 3 may be any one that conducts hydrogen ions, such as Nafion-117, Nafion-115 and Nafion- from DuPont.
112, Nafion-105, Flemion from Asahi Glass, Aciplex from Asahi Kasei, X from Dow Chemical
US-13.204.10, and the like. Also,
In addition to those having a sulfonic acid group in the side chain, those having a carboxylic acid group can also be used.
【００６７】以上のように、この発明によれば、固体高
分子電解質膜の表裏に、多穴金属板でなる基材を埋め込
み、これら基材の貫通穴の中に固体高分子電解質膜の一
部を存在させ、両電極の触媒層を、貫通穴の中に存在す
る固体高分子電解質膜の表面と基材の外側の表面とに形
成したので、膜と基材の多穴金属板がはずれにくくな
り、長期にわたって性能の安定した高性能な電解機能素
子が得られる。As described above, according to the present invention, the base material made of a multi-hole metal plate is embedded in the front and back of the solid polymer electrolyte membrane, and the solid polymer electrolyte membrane is filled in the through holes of these base materials. Part was present and the catalyst layers of both electrodes were formed on the surface of the solid polymer electrolyte membrane existing in the through hole and the outer surface of the base material, so that the membrane and the multi-hole metal plate of the base material were separated. It becomes difficult to obtain a high-performance electrolytic functional element having stable performance over a long period of time.
【００６８】また、上記触媒層の外部と接する面に、透
湿性を有しかつ撥水性を有する薄膜を被覆することによ
り、電極面が汚染されることなく、かつ非通電時の結露
による局部電池腐食等を抑制することができ、信頼性の
高い電解機能素子が得られる。The surface of the catalyst layer that contacts the outside is covered with a thin film having moisture permeability and water repellency, so that the electrode surface is not contaminated and the local battery is formed by dew condensation when not energized. A highly reliable electrolytic functional element capable of suppressing corrosion and the like can be obtained.
【００６９】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側と上記固体高分子電解質膜に接している内側
とで穴の面積を異ならせることにより、電極と固体高分
子電解質膜を機械的に強固に固定してより安定した電解
機能素子を得ることができる。Further, the through holes formed in at least one of the pair of base materials have a hole area that is not in contact with the solid polymer electrolyte membrane and is in the area in contact with the solid polymer electrolyte membrane. By making them different, the electrode and the solid polymer electrolyte membrane can be mechanically firmly fixed and a more stable electrolytic functional element can be obtained.
【００７０】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側から上記固体高分子電解質膜に接している内
側に向かって穴径を絞り、上記固体高分子電解質膜に接
していない外側の穴の面積の方を上記固体高分子電解質
膜に接している内側の穴の面積よりも大きくすることに
より、固体高分子電解質膜と基材がよりはずれにくくな
り、電極と固体高分子電解質膜を機械的に強固に固定し
てより性能の安定した電解機能素子を得ることができ
る。Further, the through hole formed in at least one of the pair of base materials has a hole diameter from the outside not in contact with the solid polymer electrolyte membrane to the inside in contact with the solid polymer electrolyte membrane. Squeezing, by making the area of the outer hole not in contact with the solid polymer electrolyte membrane larger than the area of the inner hole in contact with the solid polymer electrolyte membrane, the solid polymer electrolyte membrane and the substrate Is more unlikely to come off, and the electrode and the solid polymer electrolyte membrane can be mechanically firmly fixed to obtain an electrolytic functional element with more stable performance.
【００７１】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いる内側から上記固体高分子電解質膜に接していない外
側に向かって穴径を絞り、上記固体高分子電解質膜に接
していない外側の穴の面積の方を上記固体高分子電解質
膜に接している内側の穴の面積よりも小さくすることに
より、触媒層表面部分の電界強度を大きくして両電極間
の印加電圧を小さくすることができ、素子の電圧特性を
改善することができる。Further, the through hole formed in at least one of the pair of base materials has a hole diameter from the inner side which is in contact with the solid polymer electrolyte membrane to the outer side which is not in contact with the solid polymer electrolyte membrane. Squeezing, by making the area of the outer hole not in contact with the solid polymer electrolyte membrane smaller than the area of the inner hole in contact with the solid polymer electrolyte membrane, the electric field strength of the catalyst layer surface portion The voltage applied between both electrodes can be decreased by increasing the voltage, and the voltage characteristics of the device can be improved.
【００７２】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側から上記固体高分子電解質膜に接している内
側に向かって定められた範囲内では狭めて行きその範囲
を超えると穴径を拡げて行くように開孔することによ
り、電極部と固体高分子電解質膜を機械的に強固に固定
することができ、基材の貫通穴に食い込んでいる固体高
分子電解質膜がよいはがれにくくなり、より性能の安定
した電解機能素子を得ることができる。Further, the through hole formed in at least one of the pair of base materials is defined from the outside not in contact with the solid polymer electrolyte membrane to the inside in contact with the solid polymer electrolyte membrane. By narrowing within the range and expanding the hole diameter beyond that range, the electrode part and the solid polymer electrolyte membrane can be mechanically firmly fixed, and the through hole of the base material The solid polymer electrolyte membrane that has digged into the surface of the solid polymer electrolyte film does not easily peel off, and an electrolytic functional element with more stable performance can be obtained.
【００７３】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、上記固体高分子電解質膜に接して
いない外側と上記固体高分子電解質膜に接している内側
とで穴の面積を等しくすることにより、電極と固体高分
子電解質膜を機械的に強固に固定する要求が大きくない
場合に対応した貫通穴を有する電解機能素子を得ること
ができる。Further, the through holes formed in at least one of the pair of base materials have a hole area that is outside the area not in contact with the solid polymer electrolyte membrane and inside the area in contact with the solid polymer electrolyte membrane. By making them equal, it is possible to obtain an electrolytic functional element having a through hole corresponding to the case where there is not a strong demand for mechanically firmly fixing the electrode and the solid polymer electrolyte membrane.
【００７４】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、穴の内壁に突起を有することによ
り、基材の貫通穴に食い込んでいる固体高分子電解質膜
がよいはがれにくくなり、より性能の安定した電解機能
素子を得ることができる。In addition, since the through hole formed in at least one of the pair of base materials has a protrusion on the inner wall of the hole, the solid polymer electrolyte membrane biting into the through hole of the base material does not easily peel off. Thus, it is possible to obtain an electrolytic functional element having more stable performance.
【００７５】また、上記一対の基材の少なくとも一方に
形成された貫通穴は、穴の真中が最も膨らんでいること
により、同様にして基材の貫通穴に食い込んでいる固体
高分子電解質膜がよいはがれにくくなり、より性能の安
定した電解機能素子を得ることができる。Further, since the through hole formed in at least one of the pair of base materials is the most swelled in the center of the hole, the solid polymer electrolyte membrane which also bites into the through hole of the base material is the same. Good peeling is less likely to occur, and an electrolytic functional element having more stable performance can be obtained.
【００７６】また、上記一対の基材の少なくとも一方に
形成された貫通穴を、六角形状とすることにより、基材
の貫通穴に食い込んでいる固体高分子電解質膜がよいは
がれにくくなり、より性能の安定した電解機能素子を得
ることができる。Further, by forming the through hole formed in at least one of the pair of base materials into a hexagonal shape, the solid polymer electrolyte membrane which is biting into the through hole of the base material does not easily peel off, and the performance is further improved. It is possible to obtain a stable electrolytic function element.
【００７７】また、上記一対の基材の少なくとも一方に
形成された貫通穴を、円形形状とすることにより、基材
の貫通穴に食い込んでいる固体高分子電解質膜がよいは
がれにくくなり、より性能の安定した電解機能素子を得
ることができる。Further, by forming the through hole formed in at least one of the pair of base materials in a circular shape, the solid polymer electrolyte membrane biting into the through hole of the base material is less likely to be peeled off, resulting in better performance. It is possible to obtain a stable electrolytic function element.
【００７８】また、上記一対の基材の少なくとも一方に
形成された貫通穴を、菱形形状とすることにより、基材
の貫通穴に食い込んでいる固体高分子電解質膜がよいは
がれにくくなり、より性能の安定した電解機能素子を得
ることができる。Further, by forming the through-hole formed in at least one of the pair of base materials into a rhombic shape, the solid polymer electrolyte membrane biting into the through-hole of the base material is less likely to be peeled off, resulting in better performance. It is possible to obtain a stable electrolytic function element.
【００７９】また、上記一対の基材の少なくとも一方
に、金属箔に鉛、金、パラジウムのうち少なくとも１つ
の成分の薄膜を被覆することにより、基材の金属部であ
る多穴金属板の耐蝕性が増し、多穴金属板でのガス発生
が抑制されるので、固体高分子電解質膜がよりはずれに
くくなり、より性能の安定した電解機能素子を得ること
ができる。Further, at least one of the pair of base materials is coated with a thin film of at least one component of lead, gold and palladium on a metal foil to prevent corrosion of a multi-hole metal plate which is a metal part of the base material. Since the property is increased and the generation of gas in the multi-hole metal plate is suppressed, the solid polymer electrolyte membrane is less likely to come off, and an electrolytic functional element with more stable performance can be obtained.
【００８０】また、上記一対の基材の複数の貫通穴の中
に存在する上記固体高分子電解質膜の一部は、上記固体
高分子電解質膜に接していない外側にまで溢れて凸状に
膨らんでいるので、電極面積を広く取ることができ、電
解反応特性を向上させることができる。Further, a part of the solid polymer electrolyte membrane present in the plurality of through holes of the pair of base materials overflows to the outside not in contact with the solid polymer electrolyte membrane and bulges in a convex shape. Therefore, the electrode area can be increased and the electrolytic reaction characteristics can be improved.
【００８１】また、上記一対の基材の複数の貫通穴の中
に存在する上記固体高分子電解質膜の一部は、穴の内部
に留まり凹状にへこんでいるので、電極面積を広く取る
ことができ、電解反応特性を向上させることができる。Further, since a part of the solid polymer electrolyte membrane existing in the plurality of through holes of the pair of base materials remains in the holes and is recessed, a large electrode area can be taken. It is possible to improve the electrolytic reaction characteristics.
【００８２】また、上記触媒層には、白金触媒粒子およ
び上記固体高分子電解質膜と同一または同等組成の固体
高分子電解質が含まれているので、基材の貫通穴の中の
固体高分子電解質膜及び基材の金属部表面の触媒層の白
金触媒粒子を結着させ、電子的及びイオン的な導電性を
維持させることができ、高い電解反応特性をを維持する
ことができる。Since the catalyst layer contains the platinum catalyst particles and the solid polymer electrolyte having the same or the same composition as that of the solid polymer electrolyte membrane, the solid polymer electrolyte in the through hole of the base material. The platinum catalyst particles of the catalyst layer on the surface of the metal part of the membrane and the base material can be bound to each other to maintain electronic and ionic conductivity, and thus high electrolytic reaction characteristics can be maintained.
【００８３】また、この発明に係る電界機能素子の製造
方法によれば、固体高分子電解質膜の表裏に、複数の貫
通穴が形成された金属板でなり外部から直流の電源電圧
が供給される電極をなす一対の基材を埋め込む埋め込み
工程と、上記一対の基材の各貫通穴に存在する上記固体
高分子電解質膜の表面及び上記一対の基材の外側の表面
に触媒を塗布して外部の気体または液体分子の電解反応
を促進させる触媒層を形成する塗布工程とを含むことに
より、固体高分子電解質膜と基材との間に、はずれの原
因になる触媒粒子を介在させずに、基材の貫通穴に固体
高分子電解質膜を食い込ませることができ、しかも簡単
に触媒層を形成し、安価に電解機能素子の製造を行うこ
とができる。Further, according to the method of manufacturing an electric field function element according to the present invention, the solid polymer electrolyte membrane is made of a metal plate having a plurality of through holes, and a direct-current power supply voltage is supplied from the outside. An embedding step of embedding a pair of base materials forming electrodes, and applying a catalyst to the surface of the solid polymer electrolyte membrane present in each through hole of the pair of base materials and the outer surface of the pair of base materials to externally By including a coating step of forming a catalyst layer for promoting the electrolytic reaction of the gas or liquid molecule, between the solid polymer electrolyte membrane and the base material, without intervening catalyst particles that cause detachment, The solid polymer electrolyte membrane can be made to dig into the through holes of the base material, and furthermore, the catalyst layer can be easily formed, and the electrolytic functional element can be manufactured at low cost.
【００８４】上記埋め込み工程は、上記固体高分子電解
質膜の表裏に、上記一対の基材を該固体高分子電解質膜
が軟化する温度よりも高温でホットプレスして埋め込む
ことにより、基材の貫通穴に固体高分子電解質膜を簡単
に食い込ませることができる。In the embedding step, by embedding the pair of base materials in the front and back of the solid polymer electrolyte membrane by hot pressing at a temperature higher than the temperature at which the solid polymer electrolyte membrane softens, the base material penetrates. The solid polymer electrolyte membrane can be easily bited into the hole.
【００８５】また、上記埋め込み工程は、上記固体高分
子電解質膜に該固体高分子電解質膜を膨潤させる溶媒を
吸収させた後、ゲル化した固体高分子電解質膜の表裏に
上記一対の基材をプレスして埋め込むので、固体高分子
電解質膜を高温で加熱することなく、基材の貫通穴に固
体高分子電解質膜を食い込ませることができ、製造コス
トを低減することができる。In the embedding step, the solid polymer electrolyte membrane is allowed to absorb a solvent for swelling the solid polymer electrolyte membrane, and then the pair of base materials are placed on the front and back of the gelled solid polymer electrolyte membrane. Since the solid polymer electrolyte membrane is pressed and embedded, the solid polymer electrolyte membrane can be bitten into the through holes of the base material without heating the solid polymer electrolyte membrane at a high temperature, and the manufacturing cost can be reduced.
【００８６】また、上記溶媒は、有機溶液と水との混合
溶媒であるので、固体高分子電解質膜が軟らかくなり、
低い圧力で基材の貫通穴に固体高分子電解質膜を食い込
ませることができる。Further, since the above solvent is a mixed solvent of an organic solution and water, the solid polymer electrolyte membrane becomes soft,
The solid polymer electrolyte membrane can be made to dig into the through holes of the base material with a low pressure.
【００８７】また、上記埋め込み工程は、上記固体高分
子電解質膜の表裏に配置された一対の基材の外側の表面
に凹凸面を有する板をさらに配置してプレスすることに
より、固体高分子電解質膜の一部が貫通穴の外側にまで
溢れて凸状に膨らんでいる構造を作ることができる。In the embedding step, the solid polymer electrolyte is prepared by further disposing and pressing a plate having an uneven surface on the outer surface of a pair of base materials arranged on the front and back of the solid polymer electrolyte membrane. It is possible to form a structure in which a part of the film overflows to the outside of the through hole and bulges in a convex shape.
【００８８】さらに、上記触媒層の外部と接する表面
に、透湿性を有しかつ撥水性を有する薄膜を被覆する工
程をさらに含むことにより、電極面が汚染されることな
く、かつ非通電時の結露による局部電池腐食等を抑制す
ることができる。Further, by further including a step of coating the surface of the catalyst layer which is in contact with the outside with a thin film having moisture permeability and water repellency, the electrode surface is not contaminated and is not energized. Local battery corrosion and the like due to dew condensation can be suppressed.
【図１】 この発明の実施の形態１に係る電解機能素子
の構成を示す断面図である。FIG. 1 is a sectional view showing a configuration of an electrolytic functional element according to a first embodiment of the present invention.
【図２】 この発明の実施の形態２に係る電解機能素子
の構成を示す断面図である。FIG. 2 is a sectional view showing a configuration of an electrolytic functional element according to Embodiment 2 of the present invention.
【図３】 この発明の実施の形態３に係る電解機能素子
の構成を示す断面図である。FIG. 3 is a sectional view showing a configuration of an electrolytic functional element according to Embodiment 3 of the present invention.
【図４】 この発明の実施の形態４に係る電解機能素子
の構成を示す断面図である。FIG. 4 is a sectional view showing a configuration of an electrolytic functional element according to a fourth embodiment of the present invention.
【図５】 この発明の実施の形態１ないし４に係る電解
機能素子の多穴金属板でなる基材の外側の表面を示す平
面拡大図である。FIG. 5 is an enlarged plan view showing an outer surface of a base material formed of a multi-hole metal plate of the electrolytic function element according to the first to fourth embodiments of the present invention.
【図６】 この発明の実施の形態１〜４に係る電解機能
素子の電極構成を極端に比較して示す電極構成図であ
る。FIG. 6 is an electrode configuration diagram showing an extreme comparison of electrode configurations of the electrolytic functional elements according to the first to fourth embodiments of the present invention.
【図７】 図６に示す貫通穴の外面に沿った点Ａ〜Ｂ間
の触媒層表面に形成される電界強度をそれそれ示す特性
図である。7 is a characteristic diagram showing the electric field strength formed on the surface of the catalyst layer between points A and B along the outer surface of the through hole shown in FIG.
【図８】 この発明の実施の形態６に係るもので、電解
機能素子の製造方法を示す部材構成の断面図である。FIG. 8 is a cross-sectional view of a member structure according to the sixth embodiment of the present invention and showing a method for manufacturing an electrolytic functional element.
【図９】 従来の電解機能素子とこの発明の電解機能素
子の除湿性能の評価試験結果を示す説明図である。FIG. 9 is an explanatory diagram showing evaluation test results of dehumidification performance of a conventional electrolytic function element and the electrolytic function element of the present invention.
【図１０】 従来の電解機能素子とこの発明の電解機能
素子の除湿性能の寿命試験結果を示す説明図である。FIG. 10 is an explanatory diagram showing a life test result of dehumidification performance of a conventional electrolytic functional element and the electrolytic functional element of the present invention.
【図１１】 この発明の実施の形態６に係る電解機能素
子の構成を示す断面図である。FIG. 11 is a sectional view showing a configuration of an electrolytic functional element according to Embodiment 6 of the present invention.
【図１２】 この発明の実施の形態７に係る電解機能素
子の多穴金属板でなる基材の外側の表面を示す平面拡大
図である。FIG. 12 is an enlarged plan view showing an outer surface of a base material made of a multi-hole metal plate of an electrolytic functional element according to a seventh embodiment of the present invention.
【図１３】 この発明の実施の形態８に係る電解機能素
子の多穴金属板でなる基材の内側の表面を示す平面拡大
図である。FIG. 13 is an enlarged plan view showing an inner surface of a base material made of a multi-hole metal plate of an electrolytic functional element according to an eighth embodiment of the present invention.
【図１４】 従来の電解機能素子の構成を示す構成図で
ある。FIG. 14 is a configuration diagram showing a configuration of a conventional electrolytic functional element.
【図１５】 従来の他の電解機能素子の構成を示す構成
図である。FIG. 15 is a configuration diagram showing a configuration of another conventional electrolytic functional element.
１ 陽極、２ 陰極、３ 固体高分子電解質膜、１１、
２１ 基材、１２、２２ 触媒層、１３、２３ 透湿性
−撥水性薄膜、３１、３２ 貫通穴、３３ 貫通穴の突
起、３４ 貫通穴の膨らみ部、５０ サンドペーパー。1 anode, 2 cathode, 3 solid polymer electrolyte membrane, 11,
21 base material, 12, 22 catalyst layer, 13, 23 moisture permeable-water repellent thin film, 31, 32 through hole, 33 through hole protrusion, 34 through hole bulge portion, 50 sandpaper.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｂ０１Ｄ 53/26 Ｂ０１Ｄ 53/26 Ｚ (72)発明者 花田 武明 兵庫県尼崎市塚口本町８丁目１番１号 菱 彩テクニカ株式会社内 (72)発明者 森口 哲雄 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内 (72)発明者 安田 勝 東京都千代田区丸の内二丁目２番３号 三 菱電機株式会社内Continuation of front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location // B01D 53/26 B01D 53/26 Z (72) Inventor Takeaki Hanada 8-1, Tsukaguchihonmachi, Amagasaki City, Hyogo Prefecture No. 1 In Ryosai Technica Co., Ltd. (72) Inventor Tetsuo Moriguchi 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Masaru Yasuda 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd.
Claims (22)
を挟持するようにしてその表裏に埋め込まれた金属板で
なり外部から直流の電源電圧が供給される電極をなす一
対の基材と、 この一対の基材の外側の表面及びこれら基材の各貫通穴
の中に存在する上記固体高分子電解質膜の表面を覆うよ
うにして形成され外部の気体または液体分子の電解反応
を促進させる触媒層とを備えた電解機能素子。1. A solid polymer electrolyte membrane and a metal plate having a plurality of through holes formed therein and embedded on both sides of the solid polymer electrolyte membrane so as to sandwich the solid polymer electrolyte membrane. It is formed so as to cover the pair of base materials that form the electrodes to be supplied, the outer surfaces of the pair of base materials, and the surface of the solid polymer electrolyte membrane present in each through hole of these base materials. And an electrolysis functional element comprising a catalyst layer for promoting the electrolysis reaction of the gas or liquid molecule.
性を有しかつ撥水性を有する薄膜が被覆されていること
を特徴とする請求項１記載の電解機能素子。2. The electrolytic function element according to claim 1, wherein a surface of the catalyst layer that contacts the outside is covered with a thin film having moisture permeability and water repellency.
された貫通穴は、上記固体高分子電解質膜に接していな
い外側と上記固体高分子電解質膜に接している内側とで
穴の面積が異なることを特徴とする請求項１または２記
載の電解機能素子。3. The through hole formed in at least one of the pair of base materials has a hole area between an outer side not in contact with the solid polymer electrolyte membrane and an inner side in contact with the solid polymer electrolyte membrane. 3. The electrolytic function element according to claim 1, which is different.
された貫通穴は、上記固体高分子電解質膜に接していな
い外側から上記固体高分子電解質膜に接している内側に
向かって穴径を絞り、上記固体高分子電解質膜に接して
いない外側の穴の面積の方が上記固体高分子電解質膜に
接している内側の穴の面積よりも大きいことを特徴とす
る請求項３記載の電解機能素子。4. The through hole formed in at least one of the pair of base materials has a hole diameter increasing from the outside not in contact with the solid polymer electrolyte membrane to the inside in contact with the solid polymer electrolyte membrane. 4. The electrolytic function according to claim 3, wherein the area of the outer hole which is not in contact with the solid polymer electrolyte membrane is larger than the area of the inner hole which is in contact with the solid polymer electrolyte membrane. element.
された貫通穴は、上記固体高分子電解質膜に接している
内側から上記固体高分子電解質膜に接していない外側に
向かって穴径を絞り、上記固体高分子電解質膜に接して
いない外側の穴の面積の方が上記固体高分子電解質膜に
接している内側の穴の面積よりも小さいことを特徴とす
る請求項３記載の電解機能素子。5. The through hole formed in at least one of the pair of base materials has a hole diameter extending from the inner side in contact with the solid polymer electrolyte membrane to the outer side not in contact with the solid polymer electrolyte membrane. The electrolytic function according to claim 3, wherein the area of the outer hole which is not in contact with the solid polymer electrolyte membrane is smaller than the area of the inner hole which is in contact with the solid polymer electrolyte membrane. element.
された貫通穴は、上記固体高分子電解質膜に接していな
い外側から上記固体高分子電解質膜に接している内側に
向かって定められた範囲内では狭めて行きその範囲を超
えると穴径を拡げて行くように開孔されたことを特徴と
する請求項１または２記載の電解機能素子。6. The through hole formed in at least one of the pair of base materials is defined from the outside not in contact with the solid polymer electrolyte membrane to the inside in contact with the solid polymer electrolyte membrane. 3. The electrolytic functional element according to claim 1, wherein the electrolytic function element is opened so as to narrow within the range and expand the hole diameter when exceeding the range.
された貫通穴は、上記固体高分子電解質膜に接していな
い外側と上記固体高分子電解質膜に接している内側とで
穴の面積が等しいことを特徴とする請求項１または２記
載の電解機能素子。7. The through hole formed in at least one of the pair of base materials has an area of the hole between the outer side not in contact with the solid polymer electrolyte membrane and the inner side in contact with the solid polymer electrolyte membrane. 3. The electrolytic function element according to claim 1 or 2, wherein they are equal.
された貫通穴は、穴の内壁に突起を有していることを特
徴とする請求項７記載の電解機能素子。8. The electrolytic function element according to claim 7, wherein the through hole formed in at least one of the pair of base materials has a protrusion on the inner wall of the hole.
された貫通穴は、穴の真中が最も膨らんでいるいること
を特徴とする請求項７記載の電解機能素子。9. The electrolytic function element according to claim 7, wherein the through hole formed in at least one of the pair of base materials is most bulged in the center of the hole.
成された貫通穴は、六角形状でなることを特徴とする請
求項１ないし９のいずれかに記載の電解機能素子。10. The electrolytic function element according to claim 1, wherein the through hole formed in at least one of the pair of base materials has a hexagonal shape.
成された貫通穴は、円形形状でなることを特徴とする請
求項１ないし９のいずれかに記載の電解機能素子。11. The electrolytic function element according to claim 1, wherein the through hole formed in at least one of the pair of base materials has a circular shape.
成された貫通穴は、菱形形状でなることを特徴とする請
求項１ないし９のいずれかに記載の電解機能素子。12. The electrolytic function element according to claim 1, wherein the through hole formed in at least one of the pair of base materials has a diamond shape.
金属箔に鉛、金、パラジウムのうち少なくとも１つの成
分の薄膜が被覆されていることを特徴とする請求項１な
いし１２のいずれかに記載の電解機能素子。13. At least one of the pair of base materials comprises:
13. The electrolytic functional element according to claim 1, wherein the metal foil is coated with a thin film of at least one component selected from lead, gold, and palladium.
存在する上記固体高分子電解質膜の一部は、上記固体高
分子電解質膜に接していない外側にまで溢れて凸状に膨
らんでいることを特徴とする請求項１ないし１３のいず
れかに記載の電解機能素子。14. A part of the solid polymer electrolyte membrane existing in the plurality of through holes of the pair of base materials overflows to the outside not in contact with the solid polymer electrolyte membrane and bulges in a convex shape. The electrolytic function element according to any one of claims 1 to 13, wherein
存在する上記固体高分子電解質膜の一部は、穴の内部に
留まり凹状にへこんでいることを特徴とする請求項１な
いし１３のいずれかに記載の電解機能素子。15. The method according to claim 1, wherein a part of the solid polymer electrolyte membrane existing in the plurality of through holes of the pair of base materials remains inside the hole and is recessed. 13. The electrolytic function element according to any one of 13 above.
上記固体高分子電解質膜と同一または同等組成の固体高
分子電解質が含まれていることを特徴とする請求項１な
いし１５のいずれかに記載の電解機能素子。16. The catalyst layer contains platinum catalyst particles and a solid polymer electrolyte having the same or an equivalent composition as the solid polymer electrolyte membrane, according to any one of claims 1 to 15. The electrolytic function element described.
貫通穴が形成された金属板でなり外部から直流の電源電
圧が供給される電極をなす一対の基材を埋め込む埋め込
み工程と、 上記一対の基材の各貫通穴に存在する上記固体高分子電
解質膜の表面及び上記一対の基材の外側の表面に触媒を
塗布して外部の気体または液体分子の電解反応を促進さ
せる触媒層を形成する塗布工程とを含む電解機能素子の
製造方法。17. An embedding step of embedding a pair of base materials which are electrodes made of a metal plate having a plurality of through holes formed on the front and back of the solid polymer electrolyte membrane, and which are electrodes to which a DC power supply voltage is externally supplied. A catalyst layer for promoting the electrolytic reaction of external gas or liquid molecules by applying a catalyst to the surface of the solid polymer electrolyte membrane present in each through hole of the pair of base materials and the outer surface of the pair of base materials. A method of manufacturing an electrolytic functional element, which includes a forming step.
電解質膜の表裏に、上記一対の基材を該固体高分子電解
質膜が軟化する温度よりも高温でホットプレスして埋め
込むことを特徴とする請求項１７記載の電解機能素子の
製造方法。18. The embedding step comprises embedding the pair of base materials on the front and back of the solid polymer electrolyte membrane by hot pressing at a temperature higher than the temperature at which the solid polymer electrolyte membrane softens. The method for manufacturing an electrolytic functional element according to claim 17.
電解質膜に該固体高分子電解質膜を膨潤させる溶媒を吸
収させた後、ゲル化した固体高分子電解質膜の表裏に上
記一対の基材をプレスして埋め込むことを特徴とする請
求項１７記載の電解機能素子の製造方法。19. In the embedding step, the solid polymer electrolyte membrane is made to absorb a solvent for swelling the solid polymer electrolyte membrane, and then the pair of base materials are provided on the front and back of the gelled solid polymer electrolyte membrane. The method for manufacturing an electrolytic functional element according to claim 17, wherein the method is embedding by pressing.
媒であることを特徴とする請求項第１９項記載の電解機
能素子の製造方法。20. The method for producing an electrolytic functional element according to claim 19, wherein the solvent is a mixed solvent of an organic solution and water.
電解質膜の表裏に配置された一対の基材の外側の表面に
凹凸面を有する板をさらに配置してプレスすることを特
徴とする請求項１６ないし２０のいずれかに記載の電解
機能素子の製造方法。21. The embedding step further comprises arranging and pressing a plate having an uneven surface on the outer surface of a pair of base materials arranged on the front and back of the solid polymer electrolyte membrane. 21. A method for manufacturing an electrolytic functional element according to any one of 16 to 20.
湿性を有しかつ撥水性を有する薄膜を被覆する工程をさ
らに含むことを特徴とする請求項１６ないし２１のいず
れかに記載の電解機能素子の製造方法。22. The electrolysis according to claim 16, further comprising a step of coating a surface of the catalyst layer, which is in contact with the outside, with a thin film having moisture permeability and water repellency. Method of manufacturing functional element.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26726095A JP3299422B2 (en) | 1995-06-30 | 1995-10-16 | Electrolytic functional element and method of manufacturing the same |
| CN96106817A CN1143692A (en) | 1995-06-30 | 1996-05-30 | Electrolytic functional device and manufacture method of same |
| DE19621752A DE19621752A1 (en) | 1995-06-30 | 1996-05-30 | Electrolytic cell having solid polymer electrolyte de-humidifiers e.g. to prevent condensation |
| FR9606755A FR2735991A1 (en) | 1995-06-30 | 1996-05-31 | ELECTROLYTIC FUNCTIONAL DEVICE AND METHOD FOR MANUFACTURING SUCH A DEVICE |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16528895 | 1995-06-30 | ||
| JP7-165288 | 1995-06-30 | ||
| JP26726095A JP3299422B2 (en) | 1995-06-30 | 1995-10-16 | Electrolytic functional element and method of manufacturing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0971889A true JPH0971889A (en) | 1997-03-18 |
| JP3299422B2 JP3299422B2 (en) | 2002-07-08 |
Family
ID=26490080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26726095A Expired - Fee Related JP3299422B2 (en) | 1995-06-30 | 1995-10-16 | Electrolytic functional element and method of manufacturing the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3299422B2 (en) |
| CN (1) | CN1143692A (en) |
| DE (1) | DE19621752A1 (en) |
| FR (1) | FR2735991A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6589403B2 (en) * | 2000-02-25 | 2003-07-08 | Mitsubishi Denki Kabushiki Kaisha | Electrolysis gas converter and electric device using same |
| US6599403B2 (en) * | 1999-12-21 | 2003-07-29 | Mitsubishi Denki Kabushiki Kaisha | Electrochemical device using solid polymer electrolytic film |
| JP2005322452A (en) * | 2004-05-07 | 2005-11-17 | Nissan Motor Co Ltd | Cell plate for solid oxide fuel cell, and solid oxide fuel cell |
| JP2005537618A (en) * | 2002-08-28 | 2005-12-08 | ニューキャッスル ユニバーシティ ベンチャーズ リミティド | Fuel cell electrode |
| JP2006507627A (en) * | 2002-03-29 | 2006-03-02 | ヒューレット・パッカード・カンパニー | Fuel cell electrolyte |
| JP2012074140A (en) * | 2010-09-27 | 2012-04-12 | Toppan Printing Co Ltd | Gas diffusion layer for fuel cell and method for manufacturing the same |
| JP2012074141A (en) * | 2010-09-27 | 2012-04-12 | Toppan Printing Co Ltd | Gas diffusion layer for fuel cell and method for manufacturing the same |
| JP2014037620A (en) * | 2012-06-29 | 2014-02-27 | Toshiba Corp | Device for reducing oxygen, chamber for reducing oxygen and refrigerator |
| JP2014094334A (en) * | 2012-11-08 | 2014-05-22 | Toshiba Corp | Oxygen decreasing device and refrigerator |
| WO2016043134A1 (en) * | 2014-09-19 | 2016-03-24 | 株式会社 東芝 | Electrode unit, electrolysis device, and electrode used in electrolysis device |
| CN110715493A (en) * | 2018-07-11 | 2020-01-21 | 青岛海尔智能技术研发有限公司 | Refrigerating and freezing device and storage container thereof |
| CN110715494A (en) * | 2018-07-11 | 2020-01-21 | 青岛海尔智能技术研发有限公司 | Refrigerating and freezing device and storage container thereof |
| JP2020535001A (en) * | 2017-09-22 | 2020-12-03 | スカイア・インコーポレイテッドＳｋｙｒｅ， Ｉｎｃ． | Air-water extraction system |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6221523B1 (en) * | 1998-02-10 | 2001-04-24 | California Institute Of Technology | Direct deposit of catalyst on the membrane of direct feed fuel cells |
| US5992008A (en) * | 1998-02-10 | 1999-11-30 | California Institute Of Technology | Direct methanol feed fuel cell with reduced catalyst loading |
| DE19939727A1 (en) * | 1999-08-21 | 2001-02-22 | Forschungszentrum Juelich Gmbh | Current collector for fuel cell has honeycomb, mesh or fibrous structure conductor grid embedded in porous diffusion layer and electronically coupled to collector-distributor plate |
| DE102004041782B3 (en) * | 2004-08-28 | 2006-01-12 | Forschungszentrum Jülich GmbH | Method for coating membranes with catalyst, for use in fuel cells, comprises applying suspension of catalyst in solvent containing unpolar solvent with dipole moment which is no more than 0.5 Debye |
| CN100441273C (en) * | 2004-09-30 | 2008-12-10 | 广东工业大学 | Photoelectricity catalytic reactor for degrading organic contaminant and degradation method |
| KR101233146B1 (en) * | 2008-04-09 | 2013-02-14 | 스미토모덴키고교가부시키가이샤 | Gas decomposition apparatus and method for decomposing gas |
| WO2013175538A1 (en) * | 2012-05-24 | 2013-11-28 | 三菱電機株式会社 | Moisture removal device, lighting device for mounting on vehicle, light source lighting device |
| EP2677586A1 (en) | 2012-06-20 | 2013-12-25 | Solvay Sa | Bipolar electrode and method for producing same |
| TWI519744B (en) * | 2012-11-30 | 2016-02-01 | 財團法人工業技術研究院 | Electro-osmosis dehumidification apparatus and method thereof |
| CN105518383A (en) * | 2013-07-05 | 2016-04-20 | Sgm照明股份公司 | A lighting fixture and a method of de-humidifying a water-proof led lighting fixture. |
| CN112522734A (en) * | 2020-11-17 | 2021-03-19 | 广东省科学院新材料研究所 | Porous electrode for electrolytic gas production in liquid environment and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847471B2 (en) * | 1981-02-13 | 1983-10-22 | 工業技術院長 | Manufacturing method of electrolytic assembly |
| JPS60114325A (en) * | 1983-11-22 | 1985-06-20 | Japan Storage Battery Co Ltd | Dehumidifying method |
| US4528078A (en) * | 1984-05-23 | 1985-07-09 | The United States Of America As Represented By The United States Department Of Energy | Nonsaturable microdryer |
| JPS61216714A (en) * | 1985-03-20 | 1986-09-26 | Japan Storage Battery Co Ltd | Dehumidification |
| WO1988008742A1 (en) * | 1987-05-08 | 1988-11-17 | Mitsubishi Denki Kabushiki Kaisha | Moisture remover |
| EP0781588A3 (en) * | 1992-03-12 | 1998-11-11 | Mitsubishi Denki Kabushiki Kaisha | Oxygen concentration or humidity controlling apparatus |
| JP3036248B2 (en) * | 1992-08-18 | 2000-04-24 | 三菱電機株式会社 | Dehumidifying element using solid polymer electrolyte membrane |
-
1995
- 1995-10-16 JP JP26726095A patent/JP3299422B2/en not_active Expired - Fee Related
-
1996
- 1996-05-30 DE DE19621752A patent/DE19621752A1/en not_active Withdrawn
- 1996-05-30 CN CN96106817A patent/CN1143692A/en active Pending
- 1996-05-31 FR FR9606755A patent/FR2735991A1/en not_active Withdrawn
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6599403B2 (en) * | 1999-12-21 | 2003-07-29 | Mitsubishi Denki Kabushiki Kaisha | Electrochemical device using solid polymer electrolytic film |
| US6589403B2 (en) * | 2000-02-25 | 2003-07-08 | Mitsubishi Denki Kabushiki Kaisha | Electrolysis gas converter and electric device using same |
| JP2006507627A (en) * | 2002-03-29 | 2006-03-02 | ヒューレット・パッカード・カンパニー | Fuel cell electrolyte |
| JP4880876B2 (en) * | 2002-03-29 | 2012-02-22 | エバレデイ バツテリ カンパニー インコーポレーテツド | Fuel cell electrolyte |
| JP2005537618A (en) * | 2002-08-28 | 2005-12-08 | ニューキャッスル ユニバーシティ ベンチャーズ リミティド | Fuel cell electrode |
| JP2005322452A (en) * | 2004-05-07 | 2005-11-17 | Nissan Motor Co Ltd | Cell plate for solid oxide fuel cell, and solid oxide fuel cell |
| JP2012074140A (en) * | 2010-09-27 | 2012-04-12 | Toppan Printing Co Ltd | Gas diffusion layer for fuel cell and method for manufacturing the same |
| JP2012074141A (en) * | 2010-09-27 | 2012-04-12 | Toppan Printing Co Ltd | Gas diffusion layer for fuel cell and method for manufacturing the same |
| JP2014037620A (en) * | 2012-06-29 | 2014-02-27 | Toshiba Corp | Device for reducing oxygen, chamber for reducing oxygen and refrigerator |
| JP2014094334A (en) * | 2012-11-08 | 2014-05-22 | Toshiba Corp | Oxygen decreasing device and refrigerator |
| WO2016043134A1 (en) * | 2014-09-19 | 2016-03-24 | 株式会社 東芝 | Electrode unit, electrolysis device, and electrode used in electrolysis device |
| JPWO2016043134A1 (en) * | 2014-09-19 | 2017-04-27 | 株式会社東芝 | Electrode unit, electrolyzer, and electrode used in electrolyzer |
| JP2020535001A (en) * | 2017-09-22 | 2020-12-03 | スカイア・インコーポレイテッドＳｋｙｒｅ， Ｉｎｃ． | Air-water extraction system |
| CN110715493A (en) * | 2018-07-11 | 2020-01-21 | 青岛海尔智能技术研发有限公司 | Refrigerating and freezing device and storage container thereof |
| CN110715494A (en) * | 2018-07-11 | 2020-01-21 | 青岛海尔智能技术研发有限公司 | Refrigerating and freezing device and storage container thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2735991A1 (en) | 1997-01-03 |
| DE19621752A1 (en) | 1997-01-02 |
| CN1143692A (en) | 1997-02-26 |
| JP3299422B2 (en) | 2002-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3299422B2 (en) | Electrolytic functional element and method of manufacturing the same | |
| US6723464B2 (en) | Membrane-electrode-assembly with solid polymer electrolyte | |
| US5395705A (en) | Electrochemical cell having an electrode containing a carbon fiber paper coated with catalytic metal particles | |
| EP0718903B1 (en) | An ion exchange membrane and electrode assembly for an electrochemical cell | |
| US7901829B2 (en) | Enhanced catalyst interface for membrane electrode assembly | |
| JP4334618B2 (en) | Gas diffusion electrode for polymer electrolyte membrane fuel cell | |
| JP4702053B2 (en) | Solid polymer electrolyte membrane, membrane electrode assembly for solid polymer fuel cell, and method for producing solid polymer electrolyte membrane | |
| US6238534B1 (en) | Hybrid membrane electrode assembly | |
| CN101186139B (en) | Method of manufacturing multilayer electrolyte reinforced composite membrane | |
| JP2000503158A (en) | Continuous production method of membrane electrode assembly (MEA) | |
| JP2005520311A5 (en) | ||
| US3595700A (en) | Method of making electrode | |
| JP3480988B2 (en) | Sealing and reinforcing membrane material for fluoropolymer solid electrolyte membrane, fluoropolymer solid electrolyte membrane using the same, and plating method thereof | |
| US20080178991A1 (en) | Method of making membrane electrode assemblies | |
| JP2000090944A (en) | Manufacture of catalyst layer-electrolyte film joint body and solid polymer electrolyte fuel cell using the joint body | |
| JPH0349992B2 (en) | ||
| JPH1131515A (en) | High molecular electrolyte film-gas diffusion electrode body and its manufacture | |
| JP2005108770A (en) | Manufacturing method of electrolyte membrane electrode joint body | |
| JPH0663343A (en) | Dehumidifying element formed by using solid high-polymer electrolyte membrane | |
| FI80482C (en) | FOERFARANDE FOER FRAMSTAELLNING AV EN FAST POLYMER ELEKTROLYTSTRUKTUR GENOM ANVAENDNING AV EN VAETSKA ELLER ETT LOESNINGSMEDEL. | |
| JP5283826B2 (en) | Membrane electrode assembly and polymer electrolyte fuel cell | |
| US6328862B1 (en) | Ozone generating electrolysis cell and method of fabricating the same | |
| JP4843928B2 (en) | Solid polymer electrolyte membrane, membrane electrode assembly for solid polymer fuel cell, and method for producing solid polymer electrolyte membrane | |
| JP4870328B2 (en) | Method for manufacturing membrane-electrode assembly | |
| CA2181560C (en) | Electrochemical cell having an electrode containing a carbon fiber paper coated with catalytic metal particles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080419 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| LAPS | Cancellation because of no payment of annual fees |