Patent ID: 8404401
Filing Date: 2013-03-26
Classification: H01M,Y02E

Abstract:
1. A fuel cell comprising one or more cells stacked therein, each of said cells comprising: an MEA having a polymer electrolyte membrane and a pair of gas diffusion layers sandwiching said polymer electrolyte membrane except a peripheral region of said polymer electrolyte membrane; and a pair of self-sealing separators disposed so as to sandwich said MEA in a manner to be in contact with each of said gas diffusion layers, each of said self-sealing separators being composed of a plate-shaped separating part having electrical conductivity and a sealing part having more elasticity than said separating part, said sealing part being in contact with the peripheral region of said polymer electrolyte membrane so as to enclose an associated one of said gas diffusion layers, wherein a raised portion raised toward said separating part is formed on a periphery of said associated one of said gas diffusion layers, the raised portion and the gas diffusion layer being formed integrally and being formed of the same material, and wherein said self-sealing separator has formed therein a lower area for accommodating said raised portion formed on the periphery of an outer surface of said associated gas diffusion layer, said sealing part being disposed within said lower area.