| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide electrode catalyst with improved corrosion resistance and exhibiting high catalytic activity for a long period. <P>SOLUTION: Of the electrode catalyst including catalyst particles containing platinum, and a conductive carbon carrier carrying the catalyst particles and with a different graphitization ratio, the conductive carbon carrier comprises a conductive carbon carrier (A) not graphitized with a BET specific surface area of 250 to 1,600 m<SP>2</SP>/g, and a conductive carbon carrier (B) graphitized with a BET specific surface area of 50 to 400 m<SP>2</SP>/g. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
