| 摘要 |
Disclosed is a fuel cell including: a membrane electrolyte assembly which includes a polymer electrolyte membrane and a pair of catalyst electrodes between which the polymer electrolyte membrane is held; and separators A and B between which the membrane electrolyte assembly is held, wherein the separator A includes first gas flow channels a1 and second gas flow channels a2 which are placed adjacent to the first gas flow channels a1, the first and second gas flow channels a1 and a2 supplying an oxidizing gas or a fuel gas to the membrane electrolyte assembly, the first and second gas flow channels a1 and a2 run in parallel to each other and are alternately arranged, the first gas flow channels a1 are larger in cross sectional area than the second gas flow channels a2; wherein the separator B includes first gas flow channels b1 which run in parallel to the first and second gas flow channels a1 and a2, and second gas flow channels b2 which are placed adjacent to the first gas flow channels b1, the first and second gas flow channels supplying an oxidizing gas or a fuel to the membrane electrolyte assembly, the first and second gas flow channels b1 and b2 run in parallel to each other and are alternately arranged; and wherein the oxidizing gas or fuel gas supplied in the first and second gas flow channels a1 and a2 flows in opposite direction to the oxidizing gas or fuel gas supplied in the first and second gas flow channels b1 and b2. |
