Electrolyte membrane and solid polymer fuel cell

H - Electricity – 01 – M

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Details

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

Patent

CA 2644358

The electrolyte membrane for a solid polymer fuel cell is a laminated body of; (1) a first layer (11) composed of an ion exchange resin, and (2) a second layer (12) composed of a porous body and an ion exchange resin applied in the fine pores of the porous body. The electrolyte membrane is characterized in that the ion exchange capacity of the ion exchange resin of the second layer (12) is larger than the ion exchange capacity of the ion exchange resin of the first layer (11). Thus, both the output performance and durability can be provided at a high level.

La membrane électrolytique selon l'invention pour une pile à combustible à polymère solide est un corps stratifié : (1) d'une première couche (11) composée d'une résine d'échange d'ions, et (2) d'une seconde couche (12) composée d'un corps poreux et d'une résine d'échange d'ions appliquée dans les pores fins du corps poreux. La membrane électrolytique est caractérisée en ce que la capacité d'échange d'ions de la résine d'échange d'ions de la seconde couche (12) est supérieure à la capacité d'échange d'ions de la résine d'échange d'ions de la première couche (11). Cela permet d'obtenir un haut niveau à la fois de performance de rendement et de durabilité.

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