| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system preventing deterioration of a fuel cell at starting and stoppage, and down-sizing thereof. <P>SOLUTION: On the fuel cell stack, anode catalyst 2a, 2b, 2c are arranged so that oxygen reduction activity or effective catalytic surface area of an anode catalysis layer 2 becomes smaller as it is headed from upstream to down stream in a flowing direction of hydrogen. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
