| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cathode catalyst for a solid polymer electrolyte fuel cell substantially reducing the amount of Pt used, and realizing remarkably high activity, and to provide a solid polymer fuel cell. <P>SOLUTION: This cathode catalyst for the solid polymer fuel cell is formed by retaining a Pt-Cu base alloy on conductive carbon. The Pt-Cu base alloy contains 20-40% Pt in the ratio of the number of atoms as a composition ratio. The Pt-Cu base alloy is a Pt-Cu alloy having Pt:Cu=3:7 in the ratio of the number of atoms as the composition ratio. The Pt-Cu base alloy is retained on the conductive carbon by high frequency sputtering. <P>COPYRIGHT: (C)2004,JPO |
