| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst which has a high oxidation-consumption resistance at a high potential and can exhibit high battery performance, and to provide an electrode for a solid polymer fuel cell using the same. <P>SOLUTION: The catalyst for a solid polymer fuel cell carries a catalyst component having oxygen reduction activity in a carbon material, and a vapor adsorption amount V<SB>90</SB>of the carbon material at 25°C and at 90% relative humidity is 10-200 ml/g, and a vapor adsorption amount V<SB>50</SB>at 25°C and at 50% relative humidity is 2-100 ml/g. In addition, a ratio V<SB>50</SB>/V<SB>90</SB>of the vapor absorption amount V<SB>50</SB>at 25°C and at 50% relative humidity and the vapor absorption amount V<SB>90</SB>at 25°C and at 90% relative humidity is 0.2-0.6. The electrode for a solid polymer fuel cell uses the above catalyst. <P>COPYRIGHT: (C)2011,JPO&INPIT |
