JPS6261119B2 - - Google Patents

Info

Publication number
JPS6261119B2
JPS6261119B2 JP60136492A JP13649285A JPS6261119B2 JP S6261119 B2 JPS6261119 B2 JP S6261119B2 JP 60136492 A JP60136492 A JP 60136492A JP 13649285 A JP13649285 A JP 13649285A JP S6261119 B2 JPS6261119 B2 JP S6261119B2
Authority
JP
Japan
Prior art keywords
exchange resin
ion exchange
solution
metal
mixed
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.)
Expired
Application number
JP60136492A
Other languages
Japanese (ja)
Other versions
JPS61295388A (en
Inventor
Juko Fujita
Tamotsu Muto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Storage Battery Co Ltd
Original Assignee
Japan Storage Battery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Storage Battery Co Ltd filed Critical Japan Storage Battery Co Ltd
Priority to JP60136492A priority Critical patent/JPS61295388A/en
Publication of JPS61295388A publication Critical patent/JPS61295388A/en
Publication of JPS6261119B2 publication Critical patent/JPS6261119B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00Fuel cells; Manufacture thereof
    • H01M8/10Fuel cells with solid electrolytes
    • H01M8/1004Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30Hydrogen technology
    • Y02E60/50Fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

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)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Inert Electrodes (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明はイオン交換樹脂膜―電極接合体の製造
法に関するものである。さらに詳しくは、本発明
はイオン交換樹脂膜を固体電解質とする各種電気
化学装置に用いられるイオン交換樹脂膜―電極接
合体の製造法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for producing an ion exchange resin membrane-electrode assembly. More specifically, the present invention relates to a method for manufacturing an ion exchange resin membrane-electrode assembly used in various electrochemical devices using an ion exchange resin membrane as a solid electrolyte.

従来の技術 イオン交換樹脂膜を固体電解質とする電気化学
装置には、燃料電池、水電解槽、食塩電解槽、酸
素分離装置、塩酸電解槽あるいは水電解式湿度セ
ンサなどがある。これらの電気化学装置において
は、一般にイオン交換樹脂膜に電極が一体に接合
されたものが用いられる。イオン交換樹脂膜に電
極を接合する方法としては、電極触媒粉末とフツ
素樹脂結着剤との混合物をホツトプレスする方法
(例えば特公昭58−15544号)と、無電解メツキ法
(例えば特開昭55−38934号)とが提案されてい
る。
BACKGROUND ART Electrochemical devices using an ion exchange resin membrane as a solid electrolyte include fuel cells, water electrolyzers, salt electrolyzers, oxygen separators, hydrochloric acid electrolyzers, and water electrolysis type humidity sensors. These electrochemical devices generally use an ion exchange resin membrane with an electrode integrally bonded thereto. Methods for bonding electrodes to ion-exchange resin membranes include hot-pressing a mixture of electrode catalyst powder and fluororesin binder (e.g., Japanese Patent Publication No. 15544/1983), and electroless plating method (e.g., Japanese Patent Publication No. 15544/1983). 55-38934) has been proposed.

発明が解決しようとする問題点 従来のイオン交換樹脂膜―電極接合体において
は、ホツトプレス法にしろ無電解メツキ法にし
ろ、電極反応サイトが電解質であるイオン交換樹
脂膜と電極との接合部である二次元的な界面に局
限されていたため、実質的な作用面積が小さかつ
た。
Problems to be Solved by the Invention In conventional ion exchange resin membrane-electrode assemblies, whether using the hot pressing method or the electroless plating method, the electrode reaction site is the electrolyte at the junction between the ion exchange resin membrane and the electrode. Since it was localized to a certain two-dimensional interface, the effective area of action was small.

問題点を解決するための手段 本発明は、含フツ素高分子を骨格とするイオン
交換樹脂の有機溶媒溶液もしくは有機溶媒と水と
の混合溶媒溶液に触媒金属を含む化合物を直接溶
解せしめるか又は触媒金属を含む化合物の水溶液
を混合せしめたものに還元剤を作用せしめること
により、金属を析出せしめて得られる金属が分散
懸濁せるイオン交換樹脂の溶液もしくは該溶液と
フツ素樹脂懸濁液との混合懸濁液をイオン交換樹
脂膜に塗着せしめることによつて、上述の如き問
題点を解決せんとするものである。
Means for Solving the Problems The present invention involves directly dissolving a compound containing a catalytic metal in an organic solvent solution or a mixed solvent solution of an organic solvent and water of an ion exchange resin having a fluorine-containing polymer as a backbone; A solution of an ion exchange resin in which the metal is dispersed and suspended by precipitating the metal by acting on a reducing agent on a mixture of an aqueous solution of a compound containing a catalytic metal, or a solution of the ion exchange resin and a fluororesin suspension. The above-mentioned problems are attempted to be solved by applying a mixed suspension of the above to an ion exchange resin membrane.

作 用 含フツ素高分子を骨格とするイオン交換樹脂に
は、例えばパーフルオロカーボンスルフオン酸樹
脂がある。パーフルオロカーボンスルフオン酸樹
脂は、高温高圧下では低級脂肪族アルコールある
いはジメチルスルフオキシドなどの有機溶媒に溶
解することが知られている。このようなパーフル
オロカーボンスルフオン酸樹脂の溶液は例えばア
メリカのアルドリツチケミカル社からナフイオン
溶液(低級脂肪族アルコールと水との混合溶媒溶
液)という商標で発売されている。
Function Examples of ion exchange resins having a fluorine-containing polymer as a backbone include perfluorocarbon sulfonic acid resins. It is known that perfluorocarbon sulfonic acid resins dissolve in lower aliphatic alcohols or organic solvents such as dimethyl sulfoxide under high temperature and high pressure. Such solutions of perfluorocarbon sulfonic acid resins are sold, for example, by Aldrich Chemical Company of the United States under the trade name Nafion Solution (mixed solvent solution of lower aliphatic alcohol and water).

上記パーフルオロカーボンスルフオン酸樹脂の
溶液に触媒金属を含む化合物を直接溶解させるか
又は触媒金属を含む化合物の水溶液を混合する
と、スルフオン酸基の水素イオンと触媒金属イオ
ンあるいは触媒金属を含むカチオンとの置換が起
こり、パーフルオロカーボンスルフオン酸樹脂に
触媒金属が捕捉されたような形になる。このよう
な混合溶液を還元剤で処理すると触媒金属が析出
し、イオン交換樹脂溶液の中で、微細に分散懸濁
する。このようなイオン交換樹脂の溶液もしくは
該溶液とフツ素樹脂懸濁液との混合懸濁液を含フ
ツ素高分子を骨格とするイオン交換樹脂膜に塗着
し、溶媒を揮散せしめると、イオン交換膜と触媒
金属―イオン交換樹脂混合体との接合体が形成さ
れる。なお、塗着したのち、常温でプレスするか
加熱してプレスすると接合強度が大きくなる。か
くして、イオン交換樹脂膜と触媒金属―イオン交
換樹脂混合体との接合体が完成する。触媒金属―
イオン交換樹脂混合体は電極として作用する。
When a compound containing a catalytic metal is directly dissolved in a solution of the above perfluorocarbon sulfonic acid resin or an aqueous solution of a compound containing a catalytic metal is mixed, hydrogen ions of the sulfonic acid group and catalytic metal ions or cations containing the catalytic metal are combined. Substitution occurs and the catalytic metal becomes trapped in the perfluorocarbon sulfonic acid resin. When such a mixed solution is treated with a reducing agent, the catalyst metal is precipitated and finely dispersed and suspended in the ion exchange resin solution. When a solution of such an ion exchange resin or a mixed suspension of the solution and a fluororesin suspension is applied to an ion exchange resin membrane having a fluorine-containing polymer skeleton and the solvent is evaporated, ions are released. A bond between the exchange membrane and the catalytic metal-ion exchange resin mixture is formed. Note that after application, the bonding strength will be increased if the adhesive is pressed at room temperature or heated. In this way, a bonded body of the ion exchange resin membrane and the catalytic metal-ion exchange resin mixture is completed. Catalytic metal
The ion exchange resin mixture acts as an electrode.

このようなイオン交換樹脂膜―電極接合体にお
いては、電極の中のイオン交換樹脂も固体電解質
として機能するので、反応サイトは従来のように
イオン交換樹脂膜と電極との二次元的な界面だけ
でなくて、電極の中の触媒金属とイオン交換樹脂
との接点をも含めた三次元的な拡がりをもつこと
になり、実質的な電極作用面積が増大し、このよ
うな接合体を電気化学装置に適用したとき、分極
特性が向上する。
In such an ion exchange resin membrane-electrode assembly, the ion exchange resin in the electrode also functions as a solid electrolyte, so the reaction sites are limited to the two-dimensional interface between the ion exchange resin membrane and the electrode, as in the past. Rather, it has a three-dimensional extension that includes the contact point between the catalyst metal and ion exchange resin in the electrode, increasing the effective electrode area, and making such a bonded body electrochemical. When applied to a device, polarization properties are improved.

触媒金属としては、白金族金属を用いるのが適
当である。また触媒金属を含む化合物としては、
触媒金属の塩もしくはアンミン錯体が適当であ
る。さらに還元剤としては、ヒドラジン、水素化
ホウ素ナトリウムあるいは水素等が適用可能であ
る。
As the catalyst metal, it is appropriate to use a platinum group metal. In addition, compounds containing catalytic metals include:
Catalytic metal salts or ammine complexes are suitable. Further, as the reducing agent, hydrazine, sodium borohydride, hydrogen, etc. can be used.

なお、塗着の際、カーボン粉末を混合懸濁液の
中に添加すると、触媒金属の使用量を減量するこ
とができるという意味で効果的なことがある。
Note that adding carbon powder to the mixed suspension during coating may be effective in the sense that the amount of catalyst metal used can be reduced.

実施例 次に本発明によるイオン交換樹脂膜―電極接合
体の製造法の一実施例を説明する。
EXAMPLE Next, an example of the method for producing an ion exchange resin membrane-electrode assembly according to the present invention will be described.

直径が120mmのパーフルオロカーボンスルフオ
ン酸樹脂膜であるデユポン社(アメリカ)製のナ
フイオン117膜の片面の中心部の直径80mmの部分
に、無電解メツキ法により白金を接合せしめた。
次にナフイオン117の5%有機溶媒―水混合溶液
(アルドリツチケミカル社(アメリカ)製、有機
溶媒は低級脂肪族アルコール)10ccの中に、クロ
ロペンタアンモニウム白金クロライド(〔Pt
(NH35Cl〕Cl2)の水溶液(白金として2mg/cc
を含む)を10cc加え、しばらく放置することによ
り、ナフイオン117溶液中のスルフオン酸基の水
素イオンとクロロペンタアンモニウム白金イオン
(〔Pt(NH35Cl〕2+)とを置換した。次に5%の水
素化ホウ素ナトリウムの水溶液を加え、クロロペ
ンタアンモニウム白金イオンを還元して白金を析
出させた。このとき、微細な白金の粒子が溶液の
中に分散懸濁される。次にこの分散懸濁液に、ポ
リ4フツ化エチレンの60%水懸濁液を3cc添加し
たものを、上述の白金を接合したナフイオン117
膜の白金が接合されていない面に吹き付け、100
℃の温度、100Kg/cm2の圧力でプレスした。そして
最後に上述のナフイオン膜―電極接合体を湯洗
し、乾燥して、白金とナフイオン117とポリ4フ
ツ化エチレン以外のすべての成分を除去した。か
くして、イオン交換樹脂膜―電極接合体を完成し
た。
Platinum was bonded to the central 80 mm diameter portion of one side of the Nafion 117 membrane, which is a perfluorocarbon sulfonic acid resin membrane with a diameter of 120 mm and manufactured by DuPont (USA), by an electroless plating method.
Next, chloropentaammonium platinum chloride ([Pt
(NH 3 ) 5 Cl〕Cl 2 ) aqueous solution (2 mg/cc as platinum)
By adding 10 cc of chloropentaammonium platinum ion ([Pt(NH 3 ) 5 Cl] 2+ ) to the solution and allowing it to stand for a while, the hydrogen ions of the sulfonic acid groups in the Nafion 117 solution were replaced with chloropentaammonium platinum ions ([Pt(NH 3 ) 5 Cl] 2+ ). Next, a 5% aqueous solution of sodium borohydride was added to reduce the chloropentaammonium platinum ions and precipitate platinum. At this time, fine platinum particles are dispersed and suspended in the solution. Next, 3 cc of a 60% aqueous suspension of polytetrafluoroethylene was added to this dispersion, and the platinum-bonded naphion 117
Spray the platinum on the non-bonded side of the membrane,
Pressed at a temperature of 100Kg/ cm2 . Finally, the above napfion membrane-electrode assembly was washed with hot water and dried to remove all components other than platinum, naphion 117, and polytetrafluoroethylene. In this way, an ion exchange resin membrane-electrode assembly was completed.

上記のようにして得られたイオン交換樹脂膜―
電極接合体は、無電解メツキ法により接合された
白金電極を陽極とし、白金とナフイオン117とポ
リ4フツ化エチレンとの混合物層からなる電極を
陰極とし、この陰極に空気を供給し、陽極に水を
供給すると、空気から酸素を電気化学的に分離す
る装置となる。
Ion exchange resin membrane obtained as above -
The electrode assembly uses a platinum electrode bonded by an electroless plating method as an anode, an electrode made of a mixture layer of platinum, naphion 117, and polytetrafluoroethylene as a cathode, and air is supplied to this cathode to form an anode. The supply of water results in a device that electrochemically separates oxygen from air.

発明の効果 上述の実施例で得られたイオン交換樹脂膜―電
極接合体をAとし、陽極を上述の実施例と同様に
して形成し、陰極をホツトプレス法の白金ブラツ
クとポリ4フツ化エチレンとの混合物により形成
した従来方法によるイオン交換樹脂膜―電極接合
体をBとし、それぞれを用いて電気化学的酸素分
離装置を構成し、電流―電圧特性を求めたとこ
ろ、図に示すような結果が得られた。この図から
明らかなように、本発明によつて得られたイオン
交換樹脂膜―電極接合体の方がよりすぐれた特性
を示すことが瞭然としている。。これは電極層を
電極触媒とイオン交換樹脂との混合層から形成す
ることによつて、実質的な作用面積が増大したか
らに他ならない。
Effects of the Invention The ion exchange resin membrane-electrode assembly obtained in the above example was designated as A, the anode was formed in the same manner as in the above example, and the cathode was formed using hot pressed platinum black and polytetrafluoroethylene. An ion-exchange resin membrane-electrode assembly formed by a conventional method using a mixture of B was used to construct an electrochemical oxygen separation device, and the current-voltage characteristics were determined, and the results shown in the figure were obtained. Obtained. As is clear from this figure, it is clear that the ion exchange resin membrane-electrode assembly obtained according to the present invention exhibits better characteristics. . This is due to the substantial effect area being increased by forming the electrode layer from a mixed layer of an electrode catalyst and an ion exchange resin.

以上のように本発明方法によれば、従来の無電
解メツキ法、ホツトプレス法に比べて、実質的な
作用面積の多いイオン交換樹脂膜―電極接合体を
得ることができる。
As described above, according to the method of the present invention, it is possible to obtain an ion exchange resin membrane-electrode assembly having a substantially larger working area than the conventional electroless plating method or hot pressing method.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明方法および従来の方法によつて得ら
れたイオン交換樹脂膜―電極接合体を電気化学的
酸素分離装置に用いた場合の電流―電圧特性を示
す図である。
The figure shows the current-voltage characteristics when the ion exchange resin membrane-electrode assembly obtained by the method of the present invention and the conventional method is used in an electrochemical oxygen separation device.

Claims (1)

【特許請求の範囲】[Claims] 1 含フツ素高分子を骨格とするイオン交換樹脂
の有機溶媒溶液もしくは有機溶媒と水との混合溶
媒溶液に金属を含む化合物を溶解せしめるか又は
金属を含む化合物の水溶液を混合せしめた混合液
に還元剤を作用せしめることにより、金属を析出
せしめて得られる金属が分散懸濁せるイオン交換
樹脂の溶液もしくは該溶液とフツ素樹脂懸濁液と
の混合懸濁液を含フツ素高分子を骨格とするイオ
ン交換樹脂の片面もしくは両面に塗着せしめるこ
とを特徴とするイオン交換樹脂膜―電極接合体の
製造法。
1. A compound containing a metal is dissolved in an organic solvent solution of an ion exchange resin having a fluorine-containing polymer as a skeleton or a mixed solvent solution of an organic solvent and water, or a mixed solution containing an aqueous solution of a compound containing a metal is mixed. A solution of an ion exchange resin in which the metal is dispersed and suspended by the action of a reducing agent to precipitate the metal, or a mixed suspension of the solution and a fluororesin suspension, is used as a backbone of a fluorine-containing polymer. 1. A method for producing an ion exchange resin membrane-electrode assembly, which comprises coating one or both sides of an ion exchange resin.
JP60136492A 1985-06-21 1985-06-21 Production of ion exchange resin membrane-electrode joined body Granted JPS61295388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60136492A JPS61295388A (en) 1985-06-21 1985-06-21 Production of ion exchange resin membrane-electrode joined body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60136492A JPS61295388A (en) 1985-06-21 1985-06-21 Production of ion exchange resin membrane-electrode joined body

Publications (2)

Publication Number Publication Date
JPS61295388A JPS61295388A (en) 1986-12-26
JPS6261119B2 true JPS6261119B2 (en) 1987-12-19

Family

ID=15176419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60136492A Granted JPS61295388A (en) 1985-06-21 1985-06-21 Production of ion exchange resin membrane-electrode joined body

Country Status (1)

Country Link
JP (1) JPS61295388A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723173A (en) * 1995-01-26 1998-03-03 Matsushita Electric Industrial Co., Ltd. Method for manufacturing solid polymer electrolyte fuel cell

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5272017A (en) * 1992-04-03 1993-12-21 General Motors Corporation Membrane-electrode assemblies for electrochemical cells
DE19745904A1 (en) * 1997-10-17 1999-04-22 Hoechst Ag Water-soluble metal colloid solution, used as catalyst for fuel cells and electrolysis cells
CN1516311A (en) 1998-06-16 2004-07-28 ���µ�����ҵ��ʽ���� High-molecular electrolyte fuel battery
WO2002003489A1 (en) 2000-07-03 2002-01-10 Matsushita Electric Industrial Co., Ltd. Polyelectrolyte fuel cell
KR100441800B1 (en) 2000-08-04 2004-07-27 마쯔시다덴기산교 가부시키가이샤 Polyelectrolyte fuel cell and production method therefor
US6916575B2 (en) 2001-03-08 2005-07-12 Matsushita Electric Industrial Co., Ltd. Polymer electrolyte type fuel cell
EP1298751A3 (en) 2001-09-27 2006-04-26 Matsushita Electric Industrial Co., Ltd. Polymer electrolyte fuel cell and production method thereof
US7569302B2 (en) 2002-11-05 2009-08-04 Panasonic Corporation Fuel cell for generating electric power
JP2006252910A (en) * 2005-03-10 2006-09-21 Konica Minolta Holdings Inc Fuel cell
EP2704239A1 (en) 2012-08-29 2014-03-05 SolviCore GmbH & Co KG Colloidal dispersions comprising precious metal particles and acidic ionomer components and methods of their manufacture and use

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723173A (en) * 1995-01-26 1998-03-03 Matsushita Electric Industrial Co., Ltd. Method for manufacturing solid polymer electrolyte fuel cell
DE19602629C2 (en) * 1995-01-26 2000-09-28 Matsushita Electric Ind Co Ltd Method for producing a fuel cell with a polymer solid electrolyte

Also Published As

Publication number Publication date
JPS61295388A (en) 1986-12-26

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