Fuel cell with a seal member defining a reactant gas flow field

Details Fuel cell with a seal member defining a reactant gas flow field Fuel cell with a seal member defining a reactant gas flow field

H - Electricity

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H01M 8/10 (2006.01) H01M 2/08 (2006.01) H01M 2/14 (2006.01) H01M 4/94 (2006.01) H01M 8/02 (2006.01) H01M 8/04 (2006.01)

Patent

CA 2441623

A fuel cell includes a membrane electrode assembly and first and second metal separators for sandwiching the membrane electrode assembly. In the membrane electrode assembly, a surface area of a gas diffusion layer is larger than a surface area of a gas diffusion layer. A seal member is provided at a position corresponding to an outer marginal region of the gas diffusion layer. The seal member includes a main seal inserted between a solid polymer electrolyte membrane and the first metal separator, and an a flow field wall inserted between the gas diffusion layer and the first metal separator for defining a part of an oxygen-containing gas flow field.

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