| 主权项 |
1. A fuel cell including a frame equipped membrane electrode assembly, the frame equipped membrane electrode assembly comprising:
a membrane electrode assembly including a solid polymer electrolyte membrane, a first electrode provided on one surface of the solid polymer electrolyte membrane, and a second electrode provided on another surface of the solid polymer electrolyte membrane, the first electrode including a first catalyst layer and a first gas diffusion layer, and the second electrode including a second catalyst layer and a second gas diffusion layer, wherein a surface size of the first gas diffusion layer is larger than a surface size of the second gas diffusion layer; and a resin frame member joined to the membrane electrode assembly, the resin frame member having a frame shape around an outer end of the solid polymer electrolyte membrane, and having a step portion forming a thin inner extension that protrudes toward the second gas diffusion layer; wherein a frame shaped adhesive sheet is provided between the inner extension of the resin frame member and an outer marginal portion of the membrane electrode assembly; and wherein an inner marginal portion of the adhesive sheet includes an overlapped portion, which overlaps in an electrode thickness direction with a surface of an outer marginal portion of the second gas diffusion layer. |
