Solid polymer fuel cell-purpose electrolyte membrane,...

H - Electricity – 01 – M

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H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2660981

In an electrolyte membrane (10) for a solid polymer fuel cell, sealing ribs (12) of a predetermined height made of an electrolyte resin is formed integrally with the electrolyte membrane (10). Using the electrolyte membrane, a membrane-electrode assembly (20) is formed, which is further processed into a fuel cell (30). Thus, an electrolyte membrane and a membrane-electrode assembly which are capable of improving the sealing characteristic when incorporated into a fuel cell are obtained. Besides, a fuel cell improved in the sealing characteristic is obtained.

Selon la présente invention, dans une membrane électrolytique (10) destinée à une pile à combustible à polymère solide, des nervures d'étanchéité (12) d'une hauteur prédéterminée faites d'une résine électrolytique font partie intégrante de ladite membrane (10). À l'aide de cette dernière, un ensemble membrane-électrode (20) est formé, qui est en outre traité en pile à combustible (30). Ainsi, une membrane électrolytique et un ensemble électrode membranaire pouvant améliorer la caractéristique d'étanchéité lorsqu'ils sont intégrés à une pile à combustible sont obtenus. En outre, une pile à combustible ayant une caractéristique d'étanchéité améliorée est obtenue.

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