| 摘要 |
An improved electrocatalyst comprises a supported platinum-iron alloy catalyst of 17 to 42 atomic percent iron, the balance being platinum, and the alloy having a Pt3Fe superlattice structure. The platinum-iron alloy is supported, preferably on carbon powder or the like, shows greater activity for oxygen reduction and better resistance to sintering than does a comparable platinum catalyst. A fuel cell electrode especially suited for use as a phosphoric acid fuel cell cathode comprises the supported platinum-iron alloy electrocatalyst bound to an acid resistant support member. |
