JPS6364267A - Fuel cell - Google Patents
Fuel cellInfo
- Publication number
- JPS6364267A JPS6364267A JP61210322A JP21032286A JPS6364267A JP S6364267 A JPS6364267 A JP S6364267A JP 61210322 A JP61210322 A JP 61210322A JP 21032286 A JP21032286 A JP 21032286A JP S6364267 A JPS6364267 A JP S6364267A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- electrode base
- electrode
- fuel cell
- electrolyte
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 79
- 239000003792 electrolyte Substances 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims abstract description 25
- 239000007800 oxidant agent Substances 0.000 claims abstract description 24
- 239000011148 porous material Substances 0.000 claims abstract description 17
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 239000012495 reaction gas Substances 0.000 claims abstract description 6
- 230000001590 oxidative effect Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 abstract description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 239000002737 fuel gas Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- PEVRKKOYEFPFMN-UHFFFAOYSA-N 1,1,2,3,3,3-hexafluoroprop-1-ene;1,1,2,2-tetrafluoroethene Chemical group FC(F)=C(F)F.FC(F)=C(F)C(F)(F)F PEVRKKOYEFPFMN-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- H01M8/08—Fuel cells with aqueous electrolytes
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04276—Arrangements for managing the electrolyte stream, e.g. heat exchange
- H01M8/04283—Supply means of electrolyte to or in matrix-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
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、燃料電池の構造に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to the structure of a fuel cell.
周知の通り、燃料だ池は対向して配置された燃料電極と
酸化剤電極の間に電解質を保持した電解質マトリックス
を介在させ、燃料電極および酸化剤電極にそれぞれ燃料
および酸化剤を供給して運転される一皿の発電装置であ
る。As is well known, a fuel reservoir is operated by interposing an electrolyte matrix holding an electrolyte between a fuel electrode and an oxidizer electrode arranged opposite each other, and supplying fuel and oxidizer to the fuel electrode and the oxidizer electrode, respectively. It is a one-plate power generation device.
燃料電池には、０）カルノーサイクルの制約がなく高い
効率が期待できる、（？）電池作動温度に近い比較的高
温の有効利用が容易な廃熱が得られる、（５３）出力を
変丸でも効率はあまり変わらない、■負１佇変ηｈＩｒ
柵すスー竹什ｔγ寸？・罰ア７．）六ｆｒ 、Ｌ’ ／
ハモ１占があり、都市内もしくは都市近郊に配電用変電
所の規模で分散配置する、あるいは火力発電所の代替発
電装置とするなどの利用形態が考えられている。Fuel cells are: 0) High efficiency can be expected as there is no Carnot cycle restriction; (?) Waste heat can be obtained at a relatively high temperature close to the cell operating temperature and can be easily used effectively; (53) Output can be changed even if the output is changed Efficiency doesn't change much, ■negative 1 change ηhIr
Is the fence so bamboo thick?・Punishment A7. )6 fr, L'/
There is a majority of conifers, and usage patterns are being considered, such as dispersing them within or near cities on the scale of distribution substations, or using them as alternative power generation equipment for thermal power plants.
燃料電池は用いられる電解質の種類によってアルカリ型
、リン酸型、溶融炭酸塩型などに分類されるが、このう
ちリン酸型は第一世代と呼ばれ最も開発が進んでおり、
すでに実用規模での試運転が行なわれている。Fuel cells are classified into alkaline type, phosphoric acid type, molten carbonate type, etc. depending on the type of electrolyte used. Of these, the phosphoric acid type is called the first generation and is the most developed.
Trial runs on a practical scale have already been carried out.
ここで例えばリン酸型燃料電池について説明する。リン
酸型燃料電池で最も一般的に用いられている構造として
リブ付電極型がある。これは、例えば特開昭５８−６８
８８１号公報に記載されている構造であり、第２図に代
表的なリブ付電極構造の断面図を示した。第２図におい
て、（１）は燃料電極触媒１、（２）は電解質保持マト
リックス、（３）は酸化剤電極触媒、１であり、これら
によって反応層（４）が形成されている。（５）は燃料
電極側のリブ付電極基材、（６）は酸化剤電極側のリブ
付電極基材、（７）は周縁ガスミール部、（８）、 Ｑ
ｌ）は突起部すなわちリブ部、（９）、０３は平担部す
なわちウェブ部、ａＣ＞は燃料ガス流路、（１ニヤは酸
化剤ガス流路、１圓はフラットなガス分離板（セパレー
タ）である。なお燃料ガス流路Ｑｌと酸化剤ガス流路ｑ
３は通常直交するように配置されているが、第２図では
図をわかりやすくするために平行になるように配置して
いる。Here, for example, a phosphoric acid fuel cell will be explained. The most commonly used structure for phosphoric acid fuel cells is the ribbed electrode type. This is, for example, JP-A-58-68
This is the structure described in Japanese Patent No. 881, and FIG. 2 shows a cross-sectional view of a typical ribbed electrode structure. In FIG. 2, (1) is a fuel electrode catalyst 1, (2) is an electrolyte holding matrix, and (3) is an oxidizer electrode catalyst 1, and a reaction layer (4) is formed by these. (5) is the ribbed electrode base material on the fuel electrode side, (6) is the ribbed electrode base material on the oxidizer electrode side, (7) is the peripheral gas meal part, (8), Q
1) is a protrusion or rib portion, (9), 03 is a flat portion or web portion, aC> is a fuel gas flow path, (1 ni is an oxidant gas flow path, 1 circle is a flat gas separation plate (separator) ).In addition, the fuel gas flow path Ql and the oxidant gas flow path q
3 are normally arranged so as to be perpendicular to each other, but in FIG. 2 they are arranged parallel to each other to make the diagram easier to understand.
リブ付電極基材ｆ５） 、 （６１の役割として、反応
ガス流路α＊、Ｑ：ｉから触媒層（１）、（３１への反
応ガスの通路としての石割と、基材（５）、（６）内に
電解液を貯蔵し反応−（４）中の電解液量に過不足があ
った場合にこれを吸収するあるいは補充するリザーバと
しての役割があるが、特に酸化剤側のリブ付電極基材（
６）のウェブ部口に電解液を貯蔵した場合に酸化剤ガス
の拡散性が著しく阻害され、特性が低下するという問題
点があった。Ribbed electrode base material f5), (61's role is to split the stone as a passage for the reactive gas from the reactive gas flow path α*, Q:i to the catalyst layer (1), (31), and the base material (5), (6) Stores and reacts electrolyte in (4) It plays a role as a reservoir that absorbs or replenishes the amount of electrolyte in case there is an excess or deficiency in the amount of electrolyte in (4). Electrode base material (
When the electrolytic solution was stored at the web opening in 6), the diffusivity of the oxidant gas was significantly inhibited, resulting in a decrease in properties.
この問題点の解決手段として、例えば特開昭５８−１０
７４７号公報に記述されているように、燃料側のリブ付
定、極基材（５）の平均気孔径よりも酸化剤側のリブ付
電極基材（６）の平均気孔径の方を大きくすることによ
って、毛管力の差により酸化剤側のリブ付電極基材（６
）へなるべく電解液が貯蔵されないような工夫が試みら
れているが、平均気孔径を大きくすることによって酸化
剤側のリブ付電極基材（６）の強度が弱くなり特にウェ
ブ部＠で割れやすくなる。酸化剤側のリブ付電極基材（
６）には実質的に電解液を貯蔵しないので、貯蔵量が少
ないなどの問題点があり実用的ではなかった。As a solution to this problem, for example,
As described in Publication No. 747, the average pore diameter of the ribbed electrode base material (6) on the oxidizer side is larger than the average pore diameter of the ribbed electrode base material (5) on the fuel side. By doing so, the ribbed electrode base material (6
), attempts have been made to prevent the electrolyte from being stored as much as possible, but by increasing the average pore diameter, the strength of the ribbed electrode base material (6) on the oxidizer side becomes weaker, making it more likely to break, especially at the web part. Become. Ribbed electrode base material on the oxidizer side (
Since the method 6) does not substantially store the electrolyte, there are problems such as a small amount of storage, making it impractical.
またその他の解決手段として、特開昭５８−６８８８１
号公報に記載されているように、ウェブ部＠の平均気孔
径をリブ部α刀の平均気孔径よりも大きくすることによ
って、やはり毛管力の差によりウェブ部＠になるべく電
解液が貯蔵されないような工夫が試みられているが、平
均気孔径を大きくすることによってウェブ部α２が著し
く割れやすくなったり、また、一体化されたリブ付電極
基材のウェブ部αｔとリブ部＜１１）の平均気孔径を変
えなければならないことから手間がかかり製造コストが
高くつくなどの問題点がありやはり実用的ではなかった
。In addition, as another solution, JP-A-58-68881
As described in the publication, by making the average pore diameter of the web part larger than the average pore diameter of the rib part, it is possible to prevent the electrolyte from being stored in the web part as much as possible due to the difference in capillary force. However, by increasing the average pore diameter, the web part α2 becomes extremely easy to break, and the average of the web part αt and the rib part <11) of the integrated ribbed electrode base material However, it was not practical due to problems such as the need to change the pore diameter, which required time and effort and increased manufacturing costs.
ｒ発Ｂ日カ（ｇ！炸１．上らＪ−−Ｊ”六ｎ目頭占）従
来の燃料電池は以上のよう流構成されているので、特に
酸化剤側のリブ付電極基材（６）のウェブ部亜でのガス
拡散性が、貯蔵した電解液によって著しく阻害され特性
が低下するという問題があり、この為、酸化剤側には実
質的に電解液を貯蔵することが難しいという問題点があ
った。Since the conventional fuel cell is configured as described above, the ribbed electrode base material (6n) on the oxidizer side is ) has a problem in that the gas diffusivity in the web part is significantly inhibited by the stored electrolyte and the properties deteriorate, and for this reason, it is practically difficult to store the electrolyte on the oxidizing agent side. There was a point.
この発明は上記のような問題点を解決する為になされた
もので、酸化剤側電極基材）こおいてもガスの拡散性を
阻害することなく充分な量の電解液を貯蔵できる燃料電
池を得ることを目的とする。This invention was made to solve the above-mentioned problems, and it is a fuel cell that can store a sufficient amount of electrolyte without impeding gas diffusivity even in the oxidizer side electrode base material. The purpose is to obtain.
この発明に係る燃料電池は、少なくとも酸化剤電極基材
は、表裏何れか一方の面が触媒層に当接するフラットな
多孔性の第１電極基材と、反応ガス供給用の溝を有しリ
ブ部を第１電極基材の他方の面に当接すると共にウェブ
部をセパレータに当接し、平均気孔径が第１電極基材よ
り小さい多孔性の第２電極基材とを備えたものである。In the fuel cell according to the present invention, at least the oxidizer electrode base material includes a flat porous first electrode base material whose front or back surface is in contact with the catalyst layer, and a ribbed material having a groove for supplying a reactive gas. and a porous second electrode base material in which the web part is in contact with the other surface of the first electrode base material, the web part is in contact with the separator, and the average pore diameter is smaller than that of the first electrode base material.
この発明における第１１基材は反応ガスに対して充分な
ガス拡散性を確保し、第２電極基材は充分な量の電解液
を貯、蔵することができる。The eleventh base material in this invention ensures sufficient gas diffusivity for the reaction gas, and the second electrode base material can store and store a sufficient amount of electrolyte.
以下、この発明の一実施例を図をもとに説明する。第１
図はこの発明の一実施例による燃料電池を示す断面図で
ある。第１図では第２図の従来例と同様にわかりやすく
するために燃料ガス旅路ＯＱと酸化剤ガス流路αＪとを
平行に配置して示している。図において、α９はフラッ
トな多孔性の第１電極基材であり、−面が触媒１（３）
に当接している。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a sectional view showing a fuel cell according to an embodiment of the present invention. In FIG. 1, the fuel gas path OQ and the oxidizing gas flow path αJ are shown arranged in parallel for the sake of clarity, similar to the conventional example shown in FIG. In the figure, α9 is the flat porous first electrode base material, and the - side is the catalyst 1 (3).
is in contact with.
ａＱは反応ガス供給用の溝側を有し、リブ部０υを第１
電極基材０５に当接すると共にウェブ部＠をセパレータ
圓に当接する多孔性の第２電極基材である。aQ has a groove side for supplying reaction gas, and the rib part 0υ is the first
This is a porous second electrode base material that is in contact with the electrode base material 05 and has its web portion @ in contact with the separator circle.
リン酸型燃料電池の場合、第１電極基材α９としてはカ
ーボンペーパが好適に用いられ、第２電極基材ｑ８もカ
ーボン繊維を主として含む材質で構成するのが好ましい
。また、第１電極基材Ｑ５の平均気孔径は第２電極基材
αＱの平均気孔径よりも大きい。In the case of a phosphoric acid fuel cell, carbon paper is preferably used as the first electrode base material α9, and the second electrode base material q8 is also preferably made of a material mainly containing carbon fibers. Moreover, the average pore diameter of the first electrode base material Q5 is larger than the average pore diameter of the second electrode base material αQ.
このように構成された燃料電池においては、酸化剤ガス
は反応ガス流路である溝餞から多孔性の第１電極基材」
Ｑを通って触媒層（３）に達する。しｔコがって、リブ
部Ｕυとウェブ部□とを有する第２電極基材叫では、ガ
スの拡散性を気にせずに電解液の貯蔵を行なうことがで
きる。持にウェブ部四に充分な電解液の貯蔵を行なって
もさしつかえないので、従来例に比べて貯蔵量は大嘔に
増加する。In the fuel cell configured in this way, the oxidizing gas is transferred from the reactant gas flow path to the porous first electrode base material.
It passes through Q and reaches the catalyst layer (3). Therefore, in the second electrode base material having the rib portion Uυ and the web portion □, the electrolyte can be stored without worrying about gas diffusivity. Since there is no problem even if a sufficient amount of electrolyte is stored in the web portion 4 for a while, the storage amount increases greatly compared to the conventional example.
また、第２電極基材ｕｔ９から反応−（４）への電解液
の供給は第１電極基材α９を介して行なわれてよいが、
第１電極基材０５の基材繊維に例えば４フツ化エチレン
樹脂や４フッ化エチレン−６フツ化プロピレン共重合樹
脂などの疎水性樹脂を溶融凝固させて撲水性を与え、第
１電極基材０５に電解液が進入しないようにして充分゛
なガス拡散路を確保し、第１電極基材ｑ３の一部に撲水
性の蕪い所を設けて第２電極基材ｔｌＦ９から反応ｉ１
（４）への電解液の供給が行なわれるようにしてもよ
い。第１電極基材Ｑうの平均気孔径は第２電極基材ＱＧ
の平均気孔径よりも大きく、シているのでｆＷ ＭＷ液
によってガス拡散路が閉塞されることはまずないが、第
１［極基材ｑ９に撲水性を与えることで電解液の進入に
よるガス拡散路の閉塞をより確実に防止できる効果があ
る。Furthermore, the supply of the electrolytic solution from the second electrode base material ut9 to reaction-(4) may be performed via the first electrode base material α9,
A hydrophobic resin such as a tetrafluoroethylene resin or a tetrafluoroethylene-hexafluoropropylene copolymer resin is melted and solidified to the base fibers of the first electrode base material 05 to impart water-repellent properties, and the first electrode base material A sufficient gas diffusion path is ensured by preventing the electrolyte from entering 05, and a water-repellent groove is provided in a part of the first electrode base material q3 to conduct the reaction i1 from the second electrode base material tIF9.
The electrolytic solution may be supplied to (4). The average pore diameter of the first electrode base material Q is the second electrode base material QG.
Since the average pore diameter is larger than the average pore diameter of This has the effect of more reliably preventing blockage of the tract.
なお、燃料側に従来と同様のリブ付電極構造を適用した
場合、反応、＠ （４）での電解液の体積の急激な変化
に対しては燃料極側のリブ付電極基材（５）のリザーバ
機能で対応できるので、第２［極基材σＱでは電解液の
貯蔵という役割のみを考え反応１（４）や燃料極側のリ
ブ付電極基材（５）への電解液の供給には電極周縁部の
ガスシール部（７）を利用することができ、ガスミール
部（７）がウェットシールである場合にはそのまま利用
することができる。この場合反応層（４）や燃料極側の
リブ付電極基材（５）に電解液の不足があった場合に第
２電極基材αＱから徐々に電解液が供給される。In addition, when the same ribbed electrode structure as the conventional one is applied to the fuel side, the ribbed electrode base material (5) on the fuel electrode side is used to prevent sudden changes in the volume of the electrolyte during reaction @ (4). Since it can be handled by the reservoir function of the second electrode base material σQ, the role of the second electrode base material σQ is only to store the electrolyte, and it can be used for reaction 1 (4) and for supplying electrolyte to the ribbed electrode base material (5) on the fuel electrode side. The gas seal portion (7) at the electrode peripheral portion can be used, and if the gas seal portion (7) is a wet seal, it can be used as is. In this case, if there is a shortage of electrolyte in the reaction layer (4) or the ribbed electrode base material (5) on the fuel electrode side, the electrolyte is gradually supplied from the second electrode base material αQ.
なお、第２電極基材ＱＱには撲水処理が施されていない
すなわち実質的に疎水性樹脂を含まないことが望ましく
、その厚さについても厚すぎるとセル全体の厚さが厚く
なるので０．４朋以下が望ましい。In addition, it is desirable that the second electrode base material QQ is not treated with hydrophobic resin, that is, it does not substantially contain a hydrophobic resin, and if it is too thick, the thickness of the entire cell becomes thick. .4 or less is desirable.
また、第１図では酸化剤側にのみ本発明の構造用しても
よい。Further, in FIG. 1, the structure of the present invention may be applied only to the oxidizing agent side.
以上のように、この発明によれば、少なくとも酸化剤電
極基材は、表裏何れか一方の面が触媒、＠に当接するフ
ラットな多孔性の第１電極基材と、反応ガス供給用の溝
を有しリブ部を第１電極基材の他方の面に当接すると共
にウェブ部をセパレータに当接し、平均気孔径が第１電
極基材より小さい多孔性の第２電極基材とを備えたもの
であるので、ガスの拡散性を阻害することなく充分な量
の電解液を貯蔵することができる効果がある。As described above, according to the present invention, at least the oxidizer electrode base material includes a flat porous first electrode base material whose front and back surfaces are in contact with the catalyst, and a groove for supplying the reaction gas. a porous second electrode base material having a rib portion in contact with the other surface of the first electrode base material, a web portion in contact with the separator, and an average pore diameter smaller than that of the first electrode base material. As a result, a sufficient amount of electrolyte can be stored without impeding gas diffusivity.
第１図はこの発明の一実施例による燃料電池を示す断面
図、第２図は従来の燃料電池を示す断面図である。
・
図において、（１）は燃料電極触媒１、（２）は電解質
保持マトリックス、（３）は酸化剤電極触媒層、（４）
は反応層、（５）は燃料電極側のリブ付電極基材、（６
）は酸化剤電極側のリブ付電極基材、（７）は同縁ガス
ミーＪし怒−ｔ８１− （Ｉｌｌけリプ蝋−１９１ｆｌ
謁し士ウェブ怒−００は燃料ガス流路、０３は酸化剤ガ
ス旅路、Ｕ−１）はセパレータ、αＱは第１電極基材、
贈は第２電極基材である。
なお、各図中同一符号は同一または相当部分を示すもの
とする。FIG. 1 is a sectional view showing a fuel cell according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional fuel cell.
- In the figure, (1) is the fuel electrode catalyst 1, (2) is the electrolyte retention matrix, (3) is the oxidizer electrode catalyst layer, and (4) is the oxidizer electrode catalyst layer.
(5) is the ribbed electrode base material on the fuel electrode side, (6) is the reaction layer, (5) is the ribbed electrode base material on the fuel electrode side, and (6)
) is the electrode base material with ribs on the oxidizing agent electrode side, (7) is the same-edge gas me J Shizu-t81- (Illke Lip Wax-191fl
Audience Web U-00 is a fuel gas flow path, 03 is an oxidizing gas path, U-1) is a separator, αQ is a first electrode base material,
The gift is the second electrode base material. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (5)
媒層とを備える酸化剤電極および燃料電極、これら両電
極の触媒層間に介在する電解質保持マトリックス、並び
に上記各電極に供給する反応ガスを分離するセパレータ
を具備する燃料電池において、少なくとも酸化剤電極基
材は、表裏何れか一方の面が上記触媒層に当接するフラ
ットな多孔性の第１電極基材と、反応ガス供給用の溝を
有しリブ部を第１電極基材の他方の面に当接すると共に
ウェブ部を上記セパレータに当接し、平均気孔径が第１
電極基材より小さい多孔性の第２電極基材とを備えたも
のであることを特徴とする燃料電池。(1) An oxidizer electrode and a fuel electrode comprising an electrode base material having a reaction gas flow path and a catalyst layer provided thereon, an electrolyte retention matrix interposed between the catalyst layers of these two electrodes, and a reaction supplied to each of the above electrodes. In a fuel cell equipped with a separator for separating gases, at least the oxidant electrode base material includes a flat porous first electrode base material whose front or back surface is in contact with the catalyst layer, and a first electrode base material for supplying a reactant gas. The rib portion having a groove is in contact with the other surface of the first electrode base material, and the web portion is in contact with the separator, and the average pore diameter is in contact with the other surface of the first electrode base material.
1. A fuel cell comprising: a second electrode base material having a porosity smaller than that of the electrode base material.
特許請求の範囲第１項記載の燃料電池。(2) The fuel cell according to claim 1, wherein the first electrode base material is formed of carbon paper.
請求の範囲第１項または第２項記載の燃料電池。(3) The fuel cell according to claim 1 or 2, wherein the first electrode base material has a thickness of 0.4 mm or less.
１項ないし第３項の何れかに記載の燃料電池。(4) The fuel cell according to any one of claims 1 to 3, wherein the first electrode base material has water repellency.
１項ないし第４項の何れかに記載の燃料電池。(5) The fuel cell according to any one of claims 1 to 4, wherein the second electrode base material has hydrophilicity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61210322A JPS6364267A (en) | 1986-09-04 | 1986-09-04 | Fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61210322A JPS6364267A (en) | 1986-09-04 | 1986-09-04 | Fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6364267A true JPS6364267A (en) | 1988-03-22 |
Family
ID=16587505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61210322A Pending JPS6364267A (en) | 1986-09-04 | 1986-09-04 | Fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6364267A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059506A (en) * | 2001-08-16 | 2003-02-28 | Mitsubishi Electric Corp | Electrochemical element and electrochemical element device |
| JP2007053007A (en) * | 2005-08-18 | 2007-03-01 | Toyota Motor Corp | Fuel cell |
-
1986
- 1986-09-04 JP JP61210322A patent/JPS6364267A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003059506A (en) * | 2001-08-16 | 2003-02-28 | Mitsubishi Electric Corp | Electrochemical element and electrochemical element device |
| JP2007053007A (en) * | 2005-08-18 | 2007-03-01 | Toyota Motor Corp | Fuel cell |
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