Patent ID: 7534517

Claim:
A fuel cell, comprising: a membrane electrode composite body in which a cathode catalyst layer and an anode catalyst layer are joined to central portions of two surfaces of a solid polymer electrolyte membrane and are further held from two sides between a fuel electrode substrate having a surface area that is larger than that of said cathode catalyst layer and an oxidizer electrode substrate having a surface area that is larger than that of said anode catalyst layer, wherein: said fuel electrode substrate includes a fuel-sealing support portion surrounding said cathode catalyst layer, said fuel-sealing support portion including pores partially or wholly filled with a resin; said oxidizer electrode substrate includes an oxidizer-sealing support portion surrounding said anode catalyst layer, said oxidizer-sealing support portion including pores partially or wholly filled with said resin; and said fuel-sealing support portion is bonded to said solid polymer electrolyte membrane by said resin at a position closer to an outer edge of said solid polymer electrolyte membrane than is said cathode catalyst; and said oxidizer-sealing support portion is bonded to said solid polymer electrolyte membrane by said resin at a position closer to the outer edge of said solid polymer electrolyte membrane than is said anode catalyst.