Seal structure adopted in membrane electrode assembly for...

H - Electricity – 01 – M

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

Patent

CA 2716787

First reinforcing members (13a, 13b), having a low modulus of elasticity, are disposed between an electrolyte membrane (11) and second reinforcing members (14a, 14b) having a high modulus of elasticity, so as not to allow the electrolyte membrane (11) to readily rub against the first reinforcing members (13a, 13b) as the electrolyte membrane (11) expands and shrinks and to ultimately prevent degradation of the electrolyte membrane (11).

La présente invention concerne la suppression d'une détérioration d'une membrane électrolytique. L'invention porte sur un ensemble membrane-électrode pour une pile à combustible, dans lequel un glissement entre la membrane électrolytique et un premier élément de renforcement dû à l'expansion et à la contraction de la membrane électrolytique peut être supprimé par interposition du premier élément de renforcement, dont le module d'élasticité est faible, entre la membrane électrolytique et un second élément de renforcement dont le module d'élasticité est élevé.

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