Patent ID: 7081314

Claim:
A fuel cell comprising: a membrane electrode assembly having a solid polymer electrolyte membrane, an anode side diffusion electrode located at one side of the solid polymer electrolyte membrane, and a cathode side diffusion electrode disposed at the other side of the solid polymer electrolyte membrane, the anode side diffusion electrode comprising an anode electrode, and a first gas diffusion layer, the cathode side diffusion electrode comprising a cathode electrode, and a second gas diffusion layer, the anode electrode, which is separate from the first gas diffusion layer, being located closer to the solid polymer electrolyte membrane, the cathode electrode, which is separate from the second gas diffusion layer, being located closer to the solid polymer electrolyte membrane; a pair of separators which hold the membrane electrode assembly; and a liquid sealant having viscosity provided on the separators, which hardens while in close contact with both end faces of the first gas diffusion layer and the second gas diffusion layer to provide a seal with a certain degree of elasticity that prevents flowing of a reaction gas from the ends of the first gas diffusion layer and the second gas diffusion layer, wherein the seal surrounds the first gas diffusion layer and the second gas diffusion layer and makes contact with both end faces of the first gas diffusion layer and the second gas diffusion layer, while the membrane electrode assembly is located between the separators.