JP2003017087A - Electrochemical element - Google Patents
Electrochemical elementInfo
- Publication number
- JP2003017087A JP2003017087A JP2001200621A JP2001200621A JP2003017087A JP 2003017087 A JP2003017087 A JP 2003017087A JP 2001200621 A JP2001200621 A JP 2001200621A JP 2001200621 A JP2001200621 A JP 2001200621A JP 2003017087 A JP2003017087 A JP 2003017087A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- electrode base
- fuel
- oxidizer
- polymer 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.)
- Withdrawn
Links
Classifications
-
- 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
- Fuel Cell (AREA)
- Inert Electrodes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、カーボンクロス
またはカーボンフェルトで構成された電極基材を有する
電気化学素子に関するものである。TECHNICAL FIELD The present invention relates to an electrochemical device having an electrode substrate composed of carbon cloth or carbon felt.
【０００２】[0002]
【従来の技術】従来、固体高分子形燃料電池、除湿素
子、電解オゾナイザー、酸素富化素子等の電気化学素子
の電極基材には、カーボンペーパーが用いられていた
が、割れやすく、また和紙を作成する場合と同様に紙透
き技術を用いるので量産化に向かず、低コスト化が困難
である等の問題点があった。これらの問題点を解決する
ものとして、特開２００１−８５０１９号公報には、カ
ーボンクロスやカーボンフェルトを電極基材の材料とし
て用いられている例が示されている。カーボン短繊維を
縒った糸を織布にしたこのカーボンクロスは、いわば布
と同じであり、衣服の生地と同様にシートを巻回して製
造され、カーボンペーパーのように割れることはなく、
安価に製造することが可能である。また、カーボンフェ
ルトはフェルト生地と同じであり、やはりシートを巻回
して製造され、安価に製造することが可能である。2. Description of the Related Art Conventionally, carbon paper has been used as an electrode base material for electrochemical devices such as polymer electrolyte fuel cells, dehumidifying devices, electrolytic ozonizers, and oxygen-enriching devices. Since the paper-transparent technique is used as in the case of creating the above, there is a problem that it is not suitable for mass production and it is difficult to reduce the cost. As a solution to these problems, Japanese Patent Application Laid-Open No. 2001-85019 discloses an example in which carbon cloth or carbon felt is used as a material for an electrode base material. This carbon cloth made of woven cloth made of short carbon fibers is the same as cloth, so it is manufactured by winding a sheet in the same way as cloth for clothes, and it does not crack like carbon paper,
It can be manufactured at low cost. In addition, carbon felt is the same as felt cloth, and is also manufactured by winding a sheet, and can be manufactured at low cost.
【０００３】図６は電極基材の材料としてカーボンクロ
スを用いた従来の固体高分子形燃料電池の単セル２０の
断面図、図７は図６の単セル２０の電極・膜接合体１１
の平面図である。図において、１２はカーボンクロスで
構成された燃料電極基材、１３はカーボンクロスで構成
された酸化剤電極基材、１４は酸化剤電極基材１３と燃
料電極基材１２との間に挟まれた固体高分子電解質膜、
１５は燃料電極基材１２を囲った燃料側ガスシール部、
１６は酸化剤電極基材１３を囲った酸化剤側ガスシール
部、２１は燃料電極基材１２および燃料側ガスシール部
１５に面接触しているとともに燃料ガス流路２３が形成
された燃料側セパレータ、２２は酸化剤電極基材１３お
よび酸化剤側ガスシール部２２に面接触しているととも
に酸化剤ガス流路２４が形成された酸化剤側セパレー
タ、Ａは固体高分子電解質膜１４と燃料電極基材１２と
の間に設けられた燃料電極触媒層、Ｂは固体高分子電解
質膜１４と酸化剤電極基材１３との間に設けられた酸化
剤電極触媒層である。FIG. 6 is a sectional view of a unit cell 20 of a conventional polymer electrolyte fuel cell using carbon cloth as a material for an electrode base material, and FIG. 7 is an electrode / membrane assembly 11 of the unit cell 20 of FIG.
FIG. In the figure, 12 is a fuel electrode base material composed of carbon cloth, 13 is an oxidizer electrode base material composed of carbon cloth, and 14 is sandwiched between the oxidizer electrode base material 13 and the fuel electrode base material 12. Solid polymer electrolyte membrane,
15 is a fuel-side gas seal part surrounding the fuel electrode substrate 12,
Reference numeral 16 is an oxidant side gas seal portion surrounding the oxidant electrode base material 13, 21 is a surface side contact with the fuel electrode base material 12 and the fuel side gas seal portion 15, and a fuel side in which a fuel gas flow path 23 is formed. A separator, 22 is an oxidant-side separator in which the oxidant gas base 24 and the oxidant-side gas seal portion 22 are in surface contact with each other, and an oxidant gas flow path 24 is formed. A is the solid polymer electrolyte membrane 14 and the fuel. A fuel electrode catalyst layer provided between the electrode base material 12 and B is an oxidant electrode catalyst layer provided between the solid polymer electrolyte membrane 14 and the oxidant electrode base material 13.
【０００４】ここで、固体高分子電解質膜１４、燃料電
極触媒層Ａ、酸化剤電極触媒層Ｂ、燃料電極基材１２お
おび酸化剤電極基材１３により、電極・膜接合体１１が
構成されている。この電極・膜接合体１１は、ホットプ
レスによってやわらかくなった固体高分子電解質膜１４
の一面に燃料電極触媒層Ａ、燃料電極基材１２が食い込
み、他面に酸化剤電極触媒層Ｂ、酸化剤電極基材１３が
食い込んで一体化されている。Here, the solid polymer electrolyte membrane 14, the fuel electrode catalyst layer A, the oxidizer electrode catalyst layer B, the fuel electrode base material 12 and the oxidizer electrode base material 13 constitute an electrode / membrane assembly 11. ing. The electrode / membrane assembly 11 is a solid polymer electrolyte membrane 14 softened by hot pressing.
The fuel electrode catalyst layer A and the fuel electrode base material 12 bite into one surface, and the oxidant electrode catalyst layer B and the oxidant electrode base material 13 bite into the other surface and are integrated.
【０００５】なお、燃料側セパレータ２１および酸化剤
側セパレータ２２の周辺部の高さ寸法を高くして、両セ
パレータ２１、２２で固体高分子電解質膜１４の周辺部
を直接挟むようにしてもよい。The height of the peripheral portions of the fuel-side separator 21 and the oxidant-side separator 22 may be increased so that the peripheral portions of the solid polymer electrolyte membrane 14 are directly sandwiched between the separators 21 and 22.
【０００６】[0006]
【発明が解決しようとする課題】上記燃料電極基材１
２、上記酸化剤電極基材１３を構成するカーボンクロス
は、縦糸と横糸を交互に編みこんだものなので、シート
状のカーボンクロスを切断したときに、切断面から「ほ
つれ」を生じ易い。そのため、例えば固体高分子形燃料
電池の製造過程において、燃料電極基材１２、燃料電極
触媒層Ａ、固体高分子電解質膜１４、酸化剤電極触媒層
Ｂ、酸化剤電極基材１３の順に重ね合わせて構成された
電極・膜接合体１１に、口の字形の枠の燃料側ガスシー
ル部１５および酸化剤側ガスシール部１６を電極・膜接
合体１１０に嵌着した際に、カーボン糸が例えばセパレ
ータ２１、２２とガスシール部１５、１６との間に挟ま
り、ガスシールが阻害されるという問題点があった。ま
た、電極基材１２の材料としてカーボンフェルトを用い
た場合でも同様で、切断されたカーボンフェルトの面か
らほぐれ、フェルトの一部がセパレータ２１、２２とガ
スシール部１５、１６との間に挟まり、ガスシールが阻
害されるという問題点があった。The above fuel electrode substrate 1
2. The carbon cloth forming the oxidizer electrode base material 13 is obtained by alternately knitting warp yarns and weft yarns, and therefore, when the sheet-like carbon cloth is cut, “raveling” is likely to occur from the cut surface. Therefore, for example, in the manufacturing process of a polymer electrolyte fuel cell, the fuel electrode substrate 12, the fuel electrode catalyst layer A, the solid polymer electrolyte membrane 14, the oxidant electrode catalyst layer B, and the oxidant electrode substrate 13 are stacked in this order. When the fuel-side gas seal portion 15 and the oxidant-side gas seal portion 16 having a square frame are fitted to the electrode / membrane assembly 110, the carbon thread is There is a problem that the gas seal is obstructed by being sandwiched between the separators 21 and 22 and the gas seal portions 15 and 16. The same applies to the case where carbon felt is used as the material of the electrode substrate 12, and the felt is loosened from the surface of the cut carbon felt, and a part of the felt is sandwiched between the separators 21 and 22 and the gas seal portions 15 and 16. However, there is a problem that the gas seal is obstructed.
【０００７】さらに、固体高分子電解質膜１４は軟らか
い材質であり、運転中に水分を含むことで膨張し、その
影響を受けて燃料電極基材１２および酸化剤電極基材１
３が波打ち、燃料ガス流路２３、酸化剤ガス流路２４の
通路が狭くなってしまうといった問題点もあった。Further, the solid polymer electrolyte membrane 14 is made of a soft material and expands due to the inclusion of water during operation, so that the fuel electrode base material 12 and the oxidizer electrode base material 1 are affected by the expansion.
3 was wavy, and the passages of the fuel gas flow path 23 and the oxidant gas flow path 24 were narrowed.
【０００８】この発明は、上記のような問題点を解決す
ることを課題とするものであり、切断した電極基材の辺
の「ほつれ」や「ほぐれ」が生じにくく、またガス流路
が電極基材で塞がれにくくした電気化学素子を得ること
を目的とする。SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and it is less likely that the side of the cut electrode base material will "ravel" or "ravel", and the gas passage will have an electrode. The purpose is to obtain an electrochemical element which is difficult to be clogged with a base material.
【０００９】[0009]
【課題を解決するための手段】この発明に係る電気化学
素子は、カーボンクロスまたはカーボンフェルトで構成
され燃料と接する燃料電極基材と、前記燃料が通る燃料
ガス通路を有するとともに前記燃料電極基材と面接触し
た燃料側セパレータと、カーボンクロスまたはカーボン
フェルトで構成され酸化剤と接する酸化剤電極基材と、
前記酸化剤が通る酸化剤ガス通路を有するとともに前記
燃料電極基材と面接触した酸化剤側セパレータと、前記
酸化剤電極基材と前記燃料電極基材との間に挟まれた固
体高分子電解質膜と、前記燃料電極基材を囲った燃料側
ガスシール部と、前記酸化剤電極基材を囲った酸化剤側
ガスシール部とを備え、少なくとも前記燃料電極基材お
よび前記酸化剤電極基材の周縁部の一方が糸で縫ってあ
る。An electrochemical device according to the present invention has a fuel electrode base material made of carbon cloth or carbon felt and in contact with fuel, and a fuel gas passage through which the fuel passes, and the fuel electrode base material. A fuel-side separator in surface contact with the oxidizer electrode base material made of carbon cloth or carbon felt and in contact with the oxidizer,
An oxidant-side separator that has an oxidant gas passage through which the oxidant passes and is in surface contact with the fuel electrode substrate, and a solid polymer electrolyte sandwiched between the oxidant electrode substrate and the fuel electrode substrate. A membrane, a fuel-side gas seal portion surrounding the fuel electrode base material, and an oxidant-side gas seal portion surrounding the oxidizer electrode base material, and at least the fuel electrode base material and the oxidizer electrode base material. One of the peripheral edges of is sewn with thread.
【００１０】この発明に係る電気化学素子は、カーボン
クロスまたはカーボンフェルトで構成され燃料と接する
燃料電極基材と、前記燃料が通る燃料ガス通路を有する
とともに前記燃料電極基材と面接触した燃料側セパレー
タと、カーボンクロスまたはカーボンフェルトで構成さ
れ酸化剤と接する酸化剤電極基材と、前記酸化剤が通る
酸化剤ガス通路を有するとともに前記燃料電極基材と面
接触した酸化剤側セパレータと、前記酸化剤電極基材と
前記燃料電極基材との間に挟まれた固体高分子電解質膜
と、前記燃料電極基材を囲った燃料側ガスシール部と、
前記酸化剤電極基材を囲った酸化剤側ガスシール部とを
備え、前記燃料電極基材、前記固体高分子電解質膜およ
び前記酸化剤電極基材は、それぞれを貫通した糸で縫っ
てある。The electrochemical device according to the present invention has a fuel electrode base material made of carbon cloth or carbon felt and in contact with fuel, a fuel gas passage through which the fuel passes, and a fuel side in surface contact with the fuel electrode base material. A separator, an oxidant electrode base material that is made of carbon cloth or carbon felt and is in contact with an oxidant, an oxidant side separator that has an oxidant gas passage through which the oxidant passes and that is in surface contact with the fuel electrode base material, and A solid polymer electrolyte membrane sandwiched between an oxidizer electrode base material and the fuel electrode base material, and a fuel-side gas seal part surrounding the fuel electrode base material,
An oxidant side gas seal portion surrounding the oxidant electrode base material is provided, and the fuel electrode base material, the solid polymer electrolyte membrane, and the oxidizer electrode base material are sewn with threads penetrating each.
【００１１】また、この発明に係る電気化学素子では、
少なくとも燃料電極基材および酸化剤電極基材の周縁部
の一方が糸で縫ってあり、また燃料電極基材、固体高分
子電解質膜および酸化剤電極基材は、それぞれを貫通し
た糸で縫ってある。Further, in the electrochemical device according to the present invention,
At least one of the peripheral portions of the fuel electrode base material and the oxidizer electrode base material is sewn with a thread, and the fuel electrode base material, the solid polymer electrolyte membrane and the oxidizer electrode base material are sewn with a thread penetrating each. is there.
【００１２】また、この発明に係る電気化学素子では、
燃料電極基材、固体高分子電解質膜および酸化剤電極基
材は、十字状に糸で縫ってある。Further, in the electrochemical device according to the present invention,
The fuel electrode base material, the solid polymer electrolyte membrane, and the oxidizer electrode base material are sewn in a cross shape with threads.
【００１３】また、この発明に係る電気化学素子では、
糸は固体高分子電解質部を有している。Further, in the electrochemical device according to the present invention,
The thread has a solid polymer electrolyte part.
【００１４】また、この発明に係る電気化学素子では、
糸の中心部には芯材部が設けられている。Further, in the electrochemical device according to the present invention,
A core member is provided at the center of the yarn.
【００１５】また、この発明に係る電気化学素子では、
芯材部は、フッ素系繊維、生糸、綿糸、木綿糸および合
成繊維糸の何れかで構成されている。Further, in the electrochemical device according to the present invention,
The core portion is made of any one of fluorine fiber, raw thread, cotton thread, cotton thread, and synthetic fiber thread.
【００１６】[0016]
【発明の実施の形態】以下、この発明の実施の形態を図
について説明するが、従来のものと同一、同等部材、部
位については同一符号を付して説明する。
実施の形態１．図１はこの発明の実施の形態１の電気化
学素子である固体高分子形燃料電池の単セル１２０の断
面図、図２は図１の単セル１２０の電極・膜接合体１１
０を酸化剤電極基材１３側から視たときの平面図であ
る。図において、１はカーボンクロスで構成された酸化
剤電極基材１３の周辺部を縫っている第１の固体高分子
電解質糸、２はカーボンクロスで構成された燃料電極基
材１２、燃料電極触媒層Ａ、固体高分子電解質膜１４、
酸化剤電極触媒層Ｂおよび酸化剤電極基材１３を積層し
て構成された電極・膜接合体１１０の周辺部を縫ってい
る第２の固体高分子電解質糸である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described with reference to the drawings, in which the same or equivalent members and parts as those of the conventional one are designated by the same reference numerals. Embodiment 1. 1 is a sectional view of a unit cell 120 of a polymer electrolyte fuel cell which is an electrochemical device according to Embodiment 1 of the present invention, and FIG. 2 is an electrode / membrane assembly 11 of the unit cell 120 of FIG.
FIG. 5 is a plan view of 0 as viewed from the oxidant electrode base material 13 side. In the figure, 1 is a first solid polymer electrolyte thread sewing around the periphery of an oxidizer electrode base material 13 made of carbon cloth, 2 is a fuel electrode base material 12 made of carbon cloth, and a fuel electrode catalyst. Layer A, solid polymer electrolyte membrane 14,
It is a second solid polymer electrolyte thread sewn around the periphery of the electrode / membrane assembly 110 configured by laminating the oxidant electrode catalyst layer B and the oxidant electrode base material 13.
【００１７】この実施の形態１に用いた第１の固体高分
子電解質糸１および第２の固体高分子電解質糸２は次の
ようにして製造した。先ず、固体高分子電解質糸１、２
の原料である、スルフォン酸型パーフルオ口カーボン重
合体の前駆体すなわち末端がＳＯ2Ｆである樹脂からな
る前駆体を次のようにして合成した。１ｋｇの１，１，
２−トリク口口１，２，２−トリフルオ口エタン、４．
４ｇのα，α’−アゾビスイソブチ口ニトリルを室温で
加えて攪拌し、次に１．１ｋｇのＣＦ2＝ＣＦＯＣＦ
2（ＣＦ3）Ｏ（ＣＦ2）2ＳＯ2Ｆを加えて攪拌した。オ
ートクレーブに入れて脱気した後、７０℃に加熱し、テ
トラフルオ口エチレンによって１３気圧にまで昇圧し、
圧力と温度を維持しながら８時間保持して共重合体を得
た。The first solid polymer electrolyte yarn 1 and the second solid polymer electrolyte yarn 2 used in this Embodiment 1 were manufactured as follows. First, solid polymer electrolyte yarns 1 and 2
A precursor of a sulfonic acid-type perfluorinated carbon polymer, that is, a precursor of a resin having SO 2 F at the end was synthesized as follows. 1kg of 1,1,
2-trik mouth 1,2,2-trifluor mouth ethane, 4.
4 g of α, α′-azobisisobutyronitrile were added at room temperature and stirred, then 1.1 kg of CF 2 ═CFOCF
2 (CF 3) was O (CF 2) adding 2 SO 2 F and stirred. After degassing by placing in an autoclave, heat to 70 ° C and pressurize to 13 atm with tetrafluoroethylene.
A copolymer was obtained by maintaining the pressure and temperature for 8 hours.
【００１８】次に、作成した共重合体を容器に入れて２
５０℃に加熱し、その共重合体を５０μｍの穴のあいた
ステンレス製の金型から押し出すと共に、押し出された
糸状の共重合体を空冷によって冷却し、巻き取り機で巻
き取った。さらに、巻き取った糸をジメチルスルホキシ
ド３０％と水酸化カリウム１５％とを含む水溶液中で加
水分解し、水洗の後、５０℃、１Ｎの塩酸に８時間浸漬
してスルフォン酸基を側鎖に持つプ口トン伝導性の固体
高分子電解質糸１、２を得た。糸１、２の太さは２０μ
ｍであった。Next, the prepared copolymer was placed in a container and
The copolymer was heated to 50 ° C. and extruded from a stainless steel mold having a hole of 50 μm, and the extruded filamentous copolymer was cooled by air cooling and wound by a winder. Further, the wound yarn is hydrolyzed in an aqueous solution containing 30% dimethyl sulfoxide and 15% potassium hydroxide, washed with water, and then immersed in 1N hydrochloric acid at 50 ° C. for 8 hours to make the sulfonic acid group a side chain. Obtained solid polymer electrolyte yarns 1 and 2 having conductivity. Threads 1 and 2 have a thickness of 20μ
It was m.
【００１９】また、周縁部が固体高分子電解質糸１で編
まれた酸化剤電極基材１３については、カーボンクロス
（商品名：ＣＡＲＢＥＬ−ＣＬ、ジャパンゴアテックス
社製）を１１０ｍ×１１０ｍｍに切断して酸化剤電極基
材１３を形成し、次に第１の固体高分子電解質糸１をミ
シンの上糸と下糸にセットし、周囲の内側５ｍｍの内周
を第１の固体高分子電解質糸１を用いてミシンがけする
ことで製造した。Regarding the oxidizer electrode base material 13 whose peripheral portion is knitted with the solid polymer electrolyte yarn 1, carbon cloth (trade name: CARBEL-CL, manufactured by Japan Gore-Tex Co., Ltd.) is cut into 110 m × 110 mm. To form the oxidizer electrode base material 13, then set the first solid polymer electrolyte yarn 1 as the upper thread and the lower thread of the sewing machine, and the inner circumference of 5 mm inside is the first solid polymer electrolyte thread. No. 1 was used and the sewing machine was used.
【００２０】また、周辺部が第２の固体高分子電解質糸
２で編まれた電極・膜接合体１１０については、次に手
順で製造した。先ず、カーボンクロス（商品名：ＣＡＲ
ＢＥＬ−ＣＬ、ジャパンゴアテックス社製）を１００ｍ
ｍ×１００ｍｍに切断した。次に、転写法を用いて作成
した厚さ１０μｍの燃料電極触媒層Ａと酸化剤電極触媒
層Ｂをそれぞれ１００ｍｍ×１００ｍｍの大きさで用意
した。さらに、固体高分子電解質膜１４（商品名：Ｎａ
ｆｉｏｎ１１２、デュポン社製）を１５０ｍｍ×１５０
ｍｍの大きさで用意した。次に、燃料電極基材１２、燃
料電極触媒層Ａ、固体高分子電解質膜１４、酸化剤電極
触媒層Ｂ、酸化剤電極基材１３の順に重ね、第２の固体
高分子電解質糸２をミシンの上糸と下糸にセットし、酸
化剤電極基材１３の周辺から５ｍｍ内側の内周をミシン
がけした。そして、このようにして製造された電極・膜
接合体１１０に、口の字形の枠にした燃料側ガスシール
部１５および酸化剤側ガスシール部１６を嵌着した後、
１６０℃で５０ｋｇ／ｃｍ2の面圧を５分間かけてホッ
トプレスした。なお、このホットプレスで固体高分子電
解質糸１の周りの空隙は塞がれる。The electrode / membrane assembly 110 having the peripheral portion knitted with the second solid polymer electrolyte yarn 2 was manufactured by the following procedure. First, carbon cloth (trade name: CAR
BEL-CL, made by Japan GORE-TEX Co., Ltd.) 100m
It was cut into m × 100 mm. Next, a fuel electrode catalyst layer A and an oxidizer electrode catalyst layer B each having a thickness of 10 μm prepared by the transfer method were prepared in a size of 100 mm × 100 mm. Furthermore, the solid polymer electrolyte membrane 14 (trade name: Na
fion112, made by DuPont) 150 mm x 150
It was prepared in the size of mm. Next, the fuel electrode base material 12, the fuel electrode catalyst layer A, the solid polymer electrolyte membrane 14, the oxidizer electrode catalyst layer B, and the oxidizer electrode base material 13 are stacked in this order, and the second solid polymer electrolyte thread 2 is sewn onto the sewing machine. The upper thread and the lower thread were set, and the inner circumference 5 mm inside from the periphery of the oxidizer electrode base material 13 was machined. Then, after the fuel-side gas seal portion 15 and the oxidant-side gas seal portion 16 in the shape of a square frame are fitted to the electrode / membrane assembly 110 thus manufactured,
Hot pressing was performed at 160 ° C. for 50 minutes under a surface pressure of 50 kg / cm 2 . The hot press closes the voids around the solid polymer electrolyte yarn 1.
【００２１】図３は、固体高分子電解質糸の他の例を示
す斜視図であり、この固体高分子電解質糸は、生糸で形
成された芯材部６の周囲は固体高分子電解質部５で囲ま
れている。この固体高分子電解質糸は、次の手順に従っ
て製造した。先ず、実施の形態１で製造された共重合体
を容器に入れて２５０℃に加熱し、この共重合体に生糸
を浸せきした後、続けて取り出して空冷によって冷却
し、巻き取り機で巻き取った。生糸は熱に弱いが、高い
温度にさらされる時間が極めて短いために巻き取り機の
スピードを上げた状態ではほとんど変質しなかった。さ
らに、巻き取った生糸をジメチルスルホキシド３０％と
水酸化カリウム１５％とを含む水溶液中で加水分解し、
水洗の後、室温で０．５Ｎの塩酸に１２時間浸漬してス
ルフォン酸基を側鎖に持つプ口トン伝導性の固体高分子
電解質糸を得た。糸の太さは３０μｍであった。FIG. 3 is a perspective view showing another example of the solid polymer electrolyte yarn. In this solid polymer electrolyte yarn, a solid polymer electrolyte portion 5 is provided around a core material portion 6 formed of raw silk. being surrounded. This solid polymer electrolyte yarn was manufactured according to the following procedure. First, the copolymer produced in Embodiment 1 is placed in a container and heated to 250 ° C., the raw silk is dipped in this copolymer, then continuously taken out, cooled by air cooling, and wound by a winder. It was Although raw silk is weak to heat, it hardly changed when the winder speed was increased because the exposure time to high temperature was extremely short. Further, the wound raw silk is hydrolyzed in an aqueous solution containing 30% of dimethyl sulfoxide and 15% of potassium hydroxide,
After washing with water, it was immersed in 0.5N hydrochloric acid at room temperature for 12 hours to obtain a solid polymer electrolyte yarn having a sulfonic acid group as a side chain and having a conductive chain. The thread thickness was 30 μm.
【００２２】この固体高分子電解質糸を用いて、実施の
形態１の場合と同様に酸化剤電極基材１３および電極・
膜接合体１１０をミシンがけすることで、実施の形態１
の固体高分子形燃料電池を製造することができる。Using this solid polymer electrolyte yarn, as in the case of the first embodiment, the oxidizer electrode base material 13 and the electrode / electrode.
Embodiment 1 is performed by sewing the membrane assembly 110 with a sewing machine.
The polymer electrolyte fuel cell can be manufactured.
【００２３】実施の形態２．図４はこの発明の実施の形
態２の固体高分子形燃料電池を構成する単セル２２０の
断面図、図５は図４の単セル２２０の電極・膜接合体２
１１を酸化剤電極基材１３側から視たときの平面図であ
る。図において、３は燃料電極基材１２、燃料電極触媒
層Ａ、固体高分子電解質膜１４、酸化剤電極触媒層Ｂお
よび酸化剤電極基材１３を合わせて中央付近で十字状に
縫ってある固体高分子電解質糸、４は酸化剤電極基材１
３の内側を十字状に縫ってある固体高分子電解質糸であ
る。Embodiment 2. 4 is a cross-sectional view of a unit cell 220 that constitutes a polymer electrolyte fuel cell according to Embodiment 2 of the present invention, and FIG. 5 is an electrode / membrane assembly 2 of the unit cell 220 of FIG.
FIG. 11 is a plan view when viewing 11 from the oxidant electrode base material 13 side. In the figure, 3 is a solid in which the fuel electrode base material 12, the fuel electrode catalyst layer A, the solid polymer electrolyte membrane 14, the oxidizer electrode catalyst layer B, and the oxidizer electrode base material 13 are combined and sewn in a cross shape around the center. Polymer electrolyte yarn, 4 is an oxidizer electrode substrate 1
It is a solid polymer electrolyte thread in which the inside of 3 is sewn in a cross shape.
【００２４】ここで、固体高分子電解質糸１、４で編ん
だ酸化剤電極基材１３は次の手順により製造した。先
ず、カーボンフェルト（東邦レーヨン社製）を１１０ｍ
×１１０ｍｍに切断した。次に、実施の形態２で製造し
た固体高分子電解質糸をミシンの上糸と下糸にセット
し、周囲の内側５ｍｍの内周をミシンがけして固体高分
子電解質糸１を形成した。さらに、酸化剤電極基材１３
の内側において、井桁状に縦横２本ずつ、線対称として
ミシンがけして固体高分子電解質糸４を形成した。Here, the oxidizer electrode substrate 13 knitted with the solid polymer electrolyte yarns 1 and 4 was manufactured by the following procedure. First, carbon felt (manufactured by Toho Rayon Co., Ltd.) is 110 m.
It was cut to × 110 mm. Next, the solid polymer electrolyte yarn produced in Embodiment 2 was set as the upper thread and the lower thread of the sewing machine, and the inner circumference of 5 mm on the inner side was machined to form the solid polymer electrolyte thread 1. Furthermore, the oxidizer electrode base material 13
On the inner side of the above, a sewing machine was applied in line-symmetrical fashion, with two vertical and horizontal lines each, to form a solid polymer electrolyte thread 4.
【００２５】また、燃料電極基材１２、燃料電極触媒層
Ａ、固体高分子電解質膜１４、酸化剤電極触媒層Ｂおよ
び酸化剤電極基材１３を合わせて構成された電極・膜接
合体２１１の周囲および中央部は固体高分子電解質糸
２、３で縫ってあるが、その手順は次のとおりである。
先ず、カーボンフェルト（東邦レーヨン社製）を１００
ｍｍ×１００ｍｍに切断した。次に、転写法を用いて作
成した厚さ１０μｍの燃料電極触媒層Ａと酸化剤電極触
媒層Ｂをそれぞれ１００ｍｍ×１００ｍｍの大きさで用
意した。さらに、固体高分子電解質膜１４（商品名：Ｎ
ａｆｉｏｎ１１２、デュポン社製）を１５０ｍｍ×１５
０ｍｍの大きさで用意した。次に、燃料電極基材１２、
燃料電極触媒層Ａ、固体高分子電解質膜１４、酸化剤電
極触媒層Ｂ、酸化剤電極基材１３の順に重ねた。その
後、実施の形態２の固体高分子電解質糸をミシンの上糸
と下糸にセットし、酸化剤電極基材１３の周囲の内側５
ｍｍの内周をミシンがけして固体高分子電解質糸２を形
成した。さらに、中心線に相当する位置に十の字状に２
本ミシンがけして固体高分子電解質糸３を形成した。In addition, an electrode / membrane assembly 211 composed of the fuel electrode substrate 12, the fuel electrode catalyst layer A, the solid polymer electrolyte membrane 14, the oxidant electrode catalyst layer B, and the oxidant electrode substrate 13 is combined. The periphery and the central portion are sewn with the solid polymer electrolyte yarns 2 and 3, and the procedure is as follows.
First, 100 carbon felt (made by Toho Rayon Co., Ltd.)
It was cut into mm × 100 mm. Next, a fuel electrode catalyst layer A and an oxidizer electrode catalyst layer B each having a thickness of 10 μm prepared by the transfer method were prepared in a size of 100 mm × 100 mm. Furthermore, the solid polymer electrolyte membrane 14 (trade name: N
afion112, made by DuPont) 150 mm x 15
It was prepared in a size of 0 mm. Next, the fuel electrode substrate 12,
The fuel electrode catalyst layer A, the solid polymer electrolyte membrane 14, the oxidant electrode catalyst layer B, and the oxidant electrode base material 13 were stacked in this order. Then, the solid polymer electrolyte thread of the second embodiment is set on the upper thread and the lower thread of the sewing machine, and the inner side 5 around the oxidant electrode base material 13 is set.
The inner circumference of mm was machined to form a solid polymer electrolyte thread 2. In addition, 2 in the shape of a figure at the position corresponding to the center line.
This sewing machine was brushed to form a solid polymer electrolyte thread 3.
【００２６】次に、口の字形の燃料側ガスシール部１５
および酸化剤側ガスシール部１６を電極・膜接合体２１
１に嵌着して、１６０℃で５０ｋｇ／ｃｍ2の面圧を５
分間かけてホットプレスした。Next, the mouth-shaped fuel-side gas seal portion 15
And the oxidant side gas seal portion 16 to the electrode / membrane assembly 21.
1 and the surface pressure of 50 kg / cm 2 at 160 ° C.
Hot pressed over a period of minutes.
【００２７】次に、この実施の形態２の電極・膜接合体
２１１を１００ｃｍ2単セルに組み込んで、固体高分子
電解質糸で編んでいない従来の電極・膜接合体と性能の
比較試験を行った。Next, the electrode / membrane assembly 211 of the second embodiment was incorporated into a 100 cm 2 single cell, and a performance comparison test was conducted with a conventional electrode / membrane assembly not knitted with solid polymer electrolyte yarn. It was
【００２８】燃料ガスである純水素を燃料ガス流路２３
に流し、酸化剤である空気を酸化剤ガス流路２４に流
し、８０℃の動作温度で加湿温度を変化させて性能を調
べた。先ず、加湿温度を８０℃にした場合、実施の形態
２と従来例とで特性自体に差はなかった。しかしなが
ら、加湿温度を６５℃まで下げたところ、実施の形態２
の例では殆どセル電圧が低下しなかったのに対して、従
来例では２０ｍＶもセル電圧が低下した。このことか
ら、実施の形態２の例では、低加湿での運転が可能であ
ることが判明した。これは、酸化剤電極基材１３および
燃料電極基材１２に跨って固体高分子電解質糸２、３が
存在しており、固体高分子電解質部５を通って水分が自
由に移動できるので、酸化剤電極基材１３側で発生した
水が固体高分子電解質部５を通って燃料電極基材１２側
に戻るため、必要とする加湿量が補充されたためと考え
られる。Pure hydrogen as a fuel gas is supplied to the fuel gas passage 23.
Then, air as an oxidant was caused to flow in the oxidant gas flow path 24, and the humidification temperature was changed at an operating temperature of 80 ° C. to examine the performance. First, when the humidification temperature was set to 80 ° C., there was no difference in characteristics between the second embodiment and the conventional example. However, when the humidification temperature is lowered to 65 ° C., the second embodiment
In the above example, the cell voltage hardly dropped, whereas in the conventional example, the cell voltage dropped by 20 mV. From this, in the example of the second embodiment, it was found that the operation with low humidification is possible. This is because the solid polymer electrolyte yarns 2 and 3 are present across the oxidizer electrode base material 13 and the fuel electrode base material 12, and water can freely move through the solid polymer electrolyte portion 5, so that the oxidation is performed. It is considered that since the water generated on the agent electrode base material 13 side returns to the fuel electrode base material 12 side through the solid polymer electrolyte portion 5, the necessary amount of humidification was replenished.
【００２９】さらに、５００時間の寿命試験を実施し
た。その結果、従来例では５００時間後、３０ｍＶセル
電圧が低下したのに対して、実施の形態３の例では２ｍ
Ｖの低下にとどまった。分解調査したところ、従来例で
は、電極基材１２、１３が膨らんで燃料ガス流路２３、
酸化剤ガス流路２４が３分の１程度塞がれていることが
分かった。これに対して、実施の形態２の例では電極基
材１２、１３の膨らみによるガス流路の閉塞はほとんど
起こっていなかった。Further, a life test of 500 hours was carried out. As a result, in the conventional example, the cell voltage dropped by 30 mV after 500 hours, whereas in the example of the third embodiment, the voltage dropped by 2 m.
It was just a drop in V. As a result of disassembling and investigating, in the conventional example, the electrode base materials 12 and 13 swell and the fuel gas flow path 23,
It was found that the oxidant gas flow channel 24 was blocked by about one third. On the other hand, in the example of the second embodiment, the blockage of the gas flow path due to the bulging of the electrode base materials 12 and 13 hardly occurred.
【００３０】なお、上記実施の形態例では、末端がＳＯ
2Ｆである樹脂を用いてこれを加水分解、酸処理するこ
とでプ口トン型に変換したが、あらかじめプ口トン型を
用いることもできる。ただ、耐熱性に乏しく、１６０℃
程度にまでしか加熱できないので、糸にする場合に糸を
引くスピートを加減するなどの工夫が必要である。温度
を上げないので、耐熱性に乏しい繊維を芯材として用い
ることが可能である。In the above embodiment, the end is SO.
The resin of 2 F was used to convert it into a poutton type by hydrolysis and acid treatment, but it is also possible to use a poutton type in advance. However, it has poor heat resistance, and is 160 ° C.
Since it can only be heated to a certain degree, it is necessary to take measures such as adjusting the speed of pulling the thread when making the thread. Since the temperature is not raised, it is possible to use a fiber having poor heat resistance as the core material.
【００３１】また、上記実施の形態例では、中央部に対
して２〜４本程度ミシンがけしたが、さらに増やしても
よく、形状が安定化するだけではなく、酸化剤電極基材
１３から燃料電極基材１２への水分の移動パスを増加さ
せてより低温の加湿を可能にする効果が得られる。Further, in the above embodiment, about 2 to 4 sewing machines were sewn to the central portion, but the number may be increased, and not only the shape is stabilized, but also the oxidizer electrode base material 13 causes the fuel to flow. The effect of increasing the movement path of water to the electrode base material 12 and enabling humidification at a lower temperature can be obtained.
【００３２】さらに、上記実施の形態例では、電気化学
素子として、固体高分子形燃料電池の場合を示したが、
勿論、除湿素子、電解オゾナイザー、酸素富化素子、加
湿素子等の電気化学素子にも適用することができる。Further, in the above-mentioned embodiment, the case where the polymer electrolyte fuel cell is used as the electrochemical element is shown.
Of course, it can also be applied to electrochemical elements such as dehumidifying elements, electrolytic ozonizers, oxygen enriching elements, and humidifying elements.
【００３３】また、上記各実施の例では、燃料電極基材
１２および酸化剤電極基材１３はカーボンクロスで構成
されているが、カーボンフェルトで構成されていてもよ
い。また、燃料電極基材および酸化剤電極基材の一方は
カーボンクロスで構成され、他方はカーボンフェルトで
構成されてもよい。また、燃料電極基材および酸化剤電
極基材の一方がカーボンペーパーで構成されていてもよ
い。また、燃料電極基材の周縁部のみを固体高分子電解
質糸で縫ってもよい。In each of the above embodiments, the fuel electrode base material 12 and the oxidizer electrode base material 13 are made of carbon cloth, but they may be made of carbon felt. Further, one of the fuel electrode base material and the oxidizer electrode base material may be made of carbon cloth, and the other may be made of carbon felt. Further, one of the fuel electrode base material and the oxidizer electrode base material may be made of carbon paper. Alternatively, only the peripheral portion of the fuel electrode substrate may be sewn with the solid polymer electrolyte thread.
【００３４】さらに、上記各実施の形態例では、芯材部
６として生糸を用いた場合を示したが、耐熱性の高いフ
ッ素系繊維、吸湿性の高い綿糸、木綿糸、合成繊維糸等
を用いてもよい。Further, in each of the above-mentioned embodiments, the case where raw silk is used as the core material portion 6 is shown, but fluorine-based fiber having high heat resistance, cotton thread having high hygroscopicity, cotton thread, synthetic fiber thread and the like are used. You may use.
【００３５】[0035]
【発明の効果】以上説明したように、この発明の電気化
学素子によれば、カーボンクロスまたはカーボンフェル
トで構成され燃料と接する燃料電極基材と、前記燃料が
通る燃料ガス通路を有するとともに前記燃料電極基材と
面接触した燃料側セパレータと、カーボンクロスまたは
カーボンフェルトで構成され酸化剤と接する酸化剤電極
基材と、前記酸化剤が通る酸化剤ガス通路を有するとと
もに前記燃料電極基材と面接触した酸化剤側セパレータ
と、前記酸化剤電極基材と前記燃料電極基材との間に挟
まれた固体高分子電解質膜と、前記燃料電極基材を囲っ
た燃料側ガスシール部と、前記酸化剤電極基材を囲った
酸化剤側ガスシール部とを備え、少なくとも前記燃料電
極基材および前記酸化剤電極基材の周縁部の一方が糸で
縫ってあるので、前記燃料電極基材、前記酸化剤電極基
材の周辺部からのほつれ、ほぐれを低減させることがで
き、ほつれ、ほぐれに起因した例えばガスシール部のシ
ール不良の発生を低減することができる。As described above, according to the electrochemical device of the present invention, the fuel electrode base material which is made of carbon cloth or carbon felt and is in contact with fuel, and the fuel gas passage through which the fuel passes are provided. A fuel-side separator that is in surface contact with the electrode base material, an oxidizer electrode base material that is made of carbon cloth or carbon felt and is in contact with the oxidizer, and an oxidizer gas passage through which the oxidizer passes, and the fuel electrode base material and the surface An oxidant side separator in contact, a solid polymer electrolyte membrane sandwiched between the oxidizer electrode base material and the fuel electrode base material, a fuel side gas seal part surrounding the fuel electrode base material, and An oxidant side gas seal portion surrounding the oxidant electrode base material is provided, and at least one of the peripheral edge portions of the fuel electrode base material and the oxidant electrode base material is sewn with a thread, Serial fuel electrode substrate, the fray from the peripheral portion of the oxidant electrode substrate, loose can be reduced, fraying, it is possible to reduce the occurrence of sealing failure of resulting from the example gas seal portion to loose.
【００３６】また、この発明の電気化学素子によれば、
燃料電極基材、固体高分子電解質膜および酸化剤電極基
材は、それぞれを貫通して糸で縫ってあるので、前記燃
料電極基材、前記固体高分子電解質膜および前記酸化剤
電極は一体化され、物理的強度が確保される。また、運
転中における、燃料電極基材および酸化剤電極基材の膨
らみが抑制され、燃料ガス通路および酸化剤ガス通路の
ガスの流れが確保される。According to the electrochemical device of the present invention,
Since the fuel electrode substrate, the solid polymer electrolyte membrane and the oxidant electrode substrate are sewn with thread through each of them, the fuel electrode substrate, the solid polymer electrolyte membrane and the oxidant electrode are integrated. The physical strength is secured. Further, the swelling of the fuel electrode base material and the oxidant electrode base material during operation is suppressed, and the gas flow in the fuel gas passage and the oxidant gas passage is secured.
【００３７】また、この発明の電気化学素子によれば、
燃料電極基材、固体高分子電解質膜および酸化剤電極基
材は、十字状に糸で縫ってあるので、前記燃料電極基
材、前記固体高分子電解質膜および前記酸化剤電極はよ
り強度に一体化される。According to the electrochemical device of the present invention,
Since the fuel electrode base material, the solid polymer electrolyte membrane and the oxidant electrode base material are sewn in a cross shape with threads, the fuel electrode base material, the solid polymer electrolyte membrane and the oxidizer electrode are more strongly integrated. Be converted.
【００３８】また、この発明の電気化学素子によれば、
糸は固体高分子電解質部を有しているので、固体高分子
電解質部は、例えば酸化剤電極基材で生じた水が燃料電
極基材に移動する通路となり、電気化学素子の水分管理
が容易となる。According to the electrochemical device of the present invention,
Since the thread has a solid polymer electrolyte portion, the solid polymer electrolyte portion serves as a passage through which water generated in the oxidizer electrode base material moves to the fuel electrode base material, and water management of the electrochemical element is easy. Becomes
【００３９】また、この発明の電気化学素子によれば、
糸の中心部には芯材部が設けられているので、糸の強度
が向上する。According to the electrochemical device of the present invention,
Since the core portion is provided at the center of the yarn, the strength of the yarn is improved.
【００４０】また、この発明の電気化学素子によれば、
芯材部は、フッ素系繊維、生糸、綿糸、木綿糸および合
成繊維糸の何れかで構成されているので、低コストで糸
の強度を向上させることができる。According to the electrochemical device of the present invention,
Since the core portion is made of any one of fluorine fiber, raw thread, cotton thread, cotton thread and synthetic fiber thread, the strength of the thread can be improved at low cost.
【図１】 この発明の実施の形態１の電気化学素子であ
る固体高分子形燃料電池の単セルの断面図である。FIG. 1 is a cross-sectional view of a single cell of a polymer electrolyte fuel cell which is an electrochemical device according to a first embodiment of the present invention.
【図２】 図１の単セルの電極・膜接合体の平面図であ
る。FIG. 2 is a plan view of the electrode / membrane assembly of the single cell of FIG.
【図３】 固体高分子電解質糸の他の例を示す斜視図で
ある。FIG. 3 is a perspective view showing another example of a solid polymer electrolyte yarn.
【図４】 この発明の実施の形態２の固体高分子形燃料
電池の単セルの断面図である。FIG. 4 is a sectional view of a unit cell of a polymer electrolyte fuel cell according to Embodiment 2 of the present invention.
【図５】 図４の単セルの電極・膜接合体の平面図であ
る。5 is a plan view of the electrode / membrane assembly of the single cell of FIG. 4. FIG.
【図６】 従来の固体高分子形燃料電池の単セルの断面
図である。FIG. 6 is a cross-sectional view of a single cell of a conventional polymer electrolyte fuel cell.
【図７】 図６の単セルの電極・膜接合体の平面図であ
る。7 is a plan view of the electrode / membrane assembly of the single cell of FIG.
１，２，３，４ 固体高分子電解質糸、５ 固体高分子
電解質部、６ 芯材部、１１０，２１１ 電極・膜接合
体、１２ 燃料電極基材、１３ 酸化剤電極基材、１４
固体高分子電解質膜、１５ 燃料側ガスシール部、１
６ 酸化剤側ガスシール部、１２０，２２０ 単セル、
２１ 燃料側セパレータ、２２ 酸化剤側セパレータ、
２３ 燃料ガス流路、２４ 酸化剤ガス流路。1, 2, 3, 4 solid polymer electrolyte yarn, 5 solid polymer electrolyte part, 6 core material part, 110, 211 electrode / membrane assembly, 12 fuel electrode base material, 13 oxidizer electrode base material, 14
Solid polymer electrolyte membrane, 15 Fuel side gas seal part, 1
6 Oxidizer side gas seal part, 120, 220 single cell,
21 fuel side separator, 22 oxidant side separator,
23 fuel gas flow path, 24 oxidant gas flow path.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 廣井 治 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 Ｆターム(参考） 5H018 AA06 AS02 AS03 DD05 DD06 EE05 5H026 AA06 CX02 CX03 CX05 EE17 EE18 EE19 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Osamu Hiroi 2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo Inside Ryo Electric Co., Ltd. F term (reference) 5H018 AA06 AS02 AS03 DD05 DD06 EE05 5H026 AA06 CX02 CX03 CX05 EE17 EE18 EE19
Claims (7)
で構成され燃料と接する燃料電極基材と、前記燃料が通
る燃料ガス通路を有するとともに前記燃料電極基材と面
接触した燃料側セパレータと、カーボンクロスまたはカ
ーボンフェルトで構成され酸化剤と接する酸化剤電極基
材と、前記酸化剤が通る酸化剤ガス通路を有するととも
に前記燃料電極基材と面接触した酸化剤側セパレータ
と、前記酸化剤電極基材と前記燃料電極基材との間に挟
まれた固体高分子電解質膜と、前記燃料電極基材を囲っ
た燃料側ガスシール部と、前記酸化剤電極基材を囲った
酸化剤側ガスシール部とを備え、少なくとも前記燃料電
極基材および前記酸化剤電極基材の周縁部の一方が糸で
縫ってある電気化学素子。1. A fuel electrode base material composed of carbon cloth or carbon felt and in contact with fuel, a fuel side separator having a fuel gas passage through which the fuel passes and in surface contact with the fuel electrode base material, carbon cloth or carbon An oxidizer electrode base material formed of felt and in contact with an oxidizer, an oxidizer side separator having an oxidizer gas passage through which the oxidizer passes and in surface contact with the fuel electrode base material, the oxidizer electrode base material and the oxidizer electrode base material A solid polymer electrolyte membrane sandwiched between the fuel electrode base material, a fuel side gas seal part surrounding the fuel electrode base material, and an oxidant side gas seal part surrounding the oxidizer electrode base material. An electrochemical element comprising at least one of the peripheral portions of the fuel electrode base material and the oxidizer electrode base material sewn with a thread.
で構成され燃料と接する燃料電極基材と、前記燃料が通
る燃料ガス通路を有するとともに前記燃料電極基材と面
接触した燃料側セパレータと、カーボンクロスまたはカ
ーボンフェルトで構成され酸化剤と接する酸化剤電極基
材と、前記酸化剤が通る酸化剤ガス通路を有するととも
に前記燃料電極基材と面接触した酸化剤側セパレータ
と、前記酸化剤電極基材と前記燃料電極基材との間に挟
まれた固体高分子電解質膜と、前記燃料電極基材を囲っ
た燃料側ガスシール部と、前記酸化剤電極基材を囲った
酸化剤側ガスシール部とを備え、前記燃料電極基材、前
記固体高分子電解質膜および前記酸化剤電極基材は、そ
れぞれを貫通した糸で縫ってある電気化学素子。2. A fuel electrode base material made of carbon cloth or carbon felt and in contact with fuel, a fuel side separator having a fuel gas passage through which the fuel passes and in surface contact with the fuel electrode base material, carbon cloth or carbon An oxidizer electrode base material formed of felt and in contact with an oxidizer, an oxidizer side separator having an oxidizer gas passage through which the oxidizer passes and in surface contact with the fuel electrode base material, the oxidizer electrode base material and the oxidizer electrode base material A solid polymer electrolyte membrane sandwiched between the fuel electrode base material, a fuel side gas seal part surrounding the fuel electrode base material, and an oxidant side gas seal part surrounding the oxidizer electrode base material. An electrochemical device comprising the fuel electrode base material, the solid polymer electrolyte membrane, and the oxidizer electrode base material sewn with a thread penetrating each.
び酸化剤電極基材は、それぞれを貫通して糸で縫ってあ
る請求項１に記載の電気化学素子。3. The electrochemical element according to claim 1, wherein the fuel electrode base material, the solid polymer electrolyte membrane and the oxidizer electrode base material penetrate each and are sewn with a thread.
び酸化剤電極基材は、十字状に糸で縫ってある請求項３
に記載の電気化学素子。4. The fuel electrode substrate, the solid polymer electrolyte membrane and the oxidizer electrode substrate are sewn in a cross shape with threads.
The electrochemical device according to 1.
求項１ないし請求項４の何れかに記載の電気化学素子。5. The electrochemical device according to claim 1, wherein the thread has a solid polymer electrolyte portion.
請求項５に記載の電気化学素子。6. The electrochemical element according to claim 5, wherein a core member is provided at the center of the yarn.
木綿糸および合成繊維糸の何れかで構成されている請求
項６に記載の電気化学素子。7. The core member is made of fluorine-based fiber, raw silk, cotton thread,
The electrochemical element according to claim 6, which is composed of either a cotton thread or a synthetic fiber thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001200621A JP2003017087A (en) | 2001-07-02 | 2001-07-02 | Electrochemical element |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001200621A JP2003017087A (en) | 2001-07-02 | 2001-07-02 | Electrochemical element |
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| Publication Number | Publication Date |
|---|---|
| JP2003017087A true JP2003017087A (en) | 2003-01-17 |
Family
ID=19037714
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| JP (1) | JP2003017087A (en) |
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| JP2005085594A (en) * | 2003-09-09 | 2005-03-31 | Fuji Electric Holdings Co Ltd | Solid polymer electrolyte type fuel cell and manufacturing method of the same |
| WO2006121041A1 (en) * | 2005-05-11 | 2006-11-16 | Matsushita Electric Industrial Co., Ltd. | Fuel cell |
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| JP2008508679A (en) * | 2004-07-30 | 2008-03-21 | ゼネラル・モーターズ・コーポレーション | End-protected catalyst-coated diffusion medium and membrane electrode assembly |
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