CATALYST CARRYING CARBON PARTICLE AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a catalyst layer for a solid polymer fuel cell in which occurrence of cracks is suppressed and a problem of crossover can be solved.

SOLUTION: The catalyst carrying carbon particles have a metal catalyst carried by carbon particles which contain the carbon particles of the average primary particle size of 50-100 nm and the carbon particles of the average primary particle size of 10-40 nm in a ratio of 1 pts.wt. for the former and 0.2-6 pts.wt. for the latter.

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