Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Making catalytic electrode – process only
Reexamination Certificate
2005-12-20
2005-12-20
Kalafut, Stephen J. (Department: 1745)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Making catalytic electrode, process only
C427S115000, C156S230000
Reexamination Certificate
active
06977234
ABSTRACT:
In order to obtain an electrolyte membrane-electrode assembly using a thin electrolyte membrane, the present invention provides a production method of an electrolyte membrane-electrode assembly comprising: a step of forming a hydrogen ion-conductive polymer electrolyte membrane on a base material; a treatment step of reducing adhesion force between the base material and the hydrogen ion-conductive polymer electrolyte membrane; a step of separating and removing the base material; and a step of bonding a catalyst layer and a gas diffusion layer onto the hydrogen ion-conductive polymer electrolyte membrane, and, in order to obtain an electrolyte membrane-electrode assembly which has a catalyst without clogging and is excellent in electrode characteristics, the present invention provides a production method of an electrolyte membrane-electrode assembly comprising: a step of bonding a hydrogen ion-conductive polymer electrolyte membrane and a catalyst layer via a coating layer; a step of removing the coating layer; and a step of obtaining an electrolyte membrane-electrode assembly by forming a gas diffusion layer on the catalyst layer.
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Computer-generated English translation of JP 11-16,586 (Totsuka) Jan. 1999.
Computer-generated English translation of JP 6-251,779 (Noaki et al.) Sep. 1994.
Computer-generated English translation of JP 2000-133,809 (Utsunomiya) May 2000.
Hosaka Masato
Kosako Shinya
Uchida Makoto
Akin Gump Strauss Hauer & Feld & LLP
Kalafut Stephen J.
Matsushita Electric - Industrial Co., Ltd.
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