| 摘要 |
A fuel cell includes a membrane-electrode assembly that has an electrolyte membrane and electrodes, a seal portion formed integrally with an outer peripheral portion of the membrane-electrode assembly, gas separators sandwiching the seal portion from both sides, and gas channel-forming portions each made of a porous body which are disposed between the membrane-electrode assembly and the gas separators. The seal portion includes, as projections that are provided on at least one of the two sides thereof and that contact an adjacent gas separator, a first linear projection surrounding the gas channel-forming portions, and a gas stopper projection which is provided at such a position between the first linear projection and the outer periphery of the gas channel-forming portions as to inhibit the gas flow that passes around the gas channel-forming portions, and which is lower in height than the first linear projection.
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