CATALYST FOR FUEL ELECTRODE OF HIGH POLYMER SOLID ELECTROLYTE FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a catalyst difficult to cause lowering of catalyst activity even if fuel deficiency occurs, as for the catalyst for a fuel electrode of a high polymer solid electrolyte fuel cell.

SOLUTION: This catalyst for the fuel electrode of the high polymer solid electrolyte fuel cell is formed by having platinum and ruthenium carried on a carbon powder carrier, and the carrying ratio of platinum to ruthenium is 1: 2.5-1:4 (mol ratio). The carrying density of this catalyst is preferably 40-70%. Carbon powder having a specific surface of 600-1200 m2/g is preferably used for a carrier to carry catalyst particles.

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