Patent ID: 8628894

Claim:
A sealing structure of a fuel cell comprising: first gas diffusion layers, second gas diffusion layers and separators laminated in this order on both sides in a thickness direction of a membrane electrode assembly; and gaskets which are provided on the respective separators at both sides of the membrane electrode assembly in the thickness direction to sandwich said membrane electrode assembly or a reinforcing frame integrated with the membrane electrode assembly, the gaskets being made of an elastomeric material and being located at an outer side of said first gas diffusion layers and said second gas diffusion layers, wherein end portions of said first gas diffusion layers protrude beyond outer peripheries of said second gas diffusion layers, said second gas diffusion layers are positioned on inner peripheries of said gaskets, the end portions of said first gas diffusion layers are fitted to and positioned by support step portions formed in said gaskets, and the end portions of said first gas diffusion layers are positioned and supported by the support step portions at a height which is approximately the same as a support height of said second gas diffusion layers.