Patent ID: 8084163

Claim:
A fuel cell comprising: a membrane electrolyte assembly including a polymer electrolyte membrane and a pair of catalyst electrodes consisting of an air electrode and a fuel electrode, the catalyst electrodes sandwiching the polymer electrolyte membrane; a pair of separators consisting of an air electrode separator in which two or more oxidizing gas channels are formed and a fuel electrode separator in which two or more fuel gas channels are formed, the separators sandwiching the membrane electrolyte assembly; the two or more oxidizing gas channels can supply an oxidizing gas to the air electrode, and the two or more fuel gas channels can supply a fuel gas to the fuel electrode, wherein large gaps and small gaps are provided alternately between the two adjacent oxidizing gas channels along a specific direction, and the two adjacent oxidizing gas channels are made serpentine and are symmetrical with respect to a line parallel to the specific direction, and the fuel gas channels do not overlap portions of the oxidizing gas channels, that are parallel to the fuel gas channels.