| 摘要 |
PROBLEM TO BE SOLVED: To enhance catalytic activity by controlling particle size of a Pt catalyst to less than 5 nm to improve catalyst activity, and enhance a catalyst utilization efficiency by increasing a catalyst particle ratio existing on the surface of a carbon carrier using the carbon carrier with a reduced specific surface area and with less micropores. SOLUTION: In a fuel cell having a fuel electrode, an oxygen electrode, and a polymer electrolyte membrane interposed between the fuel electrode and the oxygen electrode, the fuel electrode and/or the oxygen electrode contain/contains the catalyst formed by carrying particles containing at least Pt and an oxide of P on the carbon carrier. COPYRIGHT: (C)2007,JPO&INPIT
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