| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress oxidation of carbon in a catalyst layer in a fuel cell. <P>SOLUTION: In a fuel cell including an MEA 10, a gas diffusion sheet 12 and a separator 20, carbon having crystallinity lower than that of carbon in an anode catalyst layer of the MEA 10 is added in the gas diffusion sheet 12. An additive amount of the carbon having low crystallinity is varied in the thickness direction of the gas diffusion sheet 12 so that the amount on an MEA 10 side is relatively less than that on a separator 20 side, and thereby drainage properties can be secured. <P>COPYRIGHT: (C)2012,JPO&INPIT |
