| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrode catalyst for a fuel cell that exhibits sufficient catalyst performance even while minimizing a Pt content. <P>SOLUTION: A conductive carrier 11 in the electrode catalyst 10 for a fuel cell has a flat face 11a carrying a metal catalyst 12. The metal catalyst 12 has a surface 12a which is composed of a layer formed by bonding 300-1,300 Pt atoms adjacently to each other into a planar shape, while having a thickness of one Pt atom in its thickness direction; and a binder 12b that is interposed between the flat face 11a of the conductive carrier 11 and the surface part 12a, and formed by bonding at least one kind of atom among Pd, Rh, Os, Ru, Ir, and a transition metal. The metal catalyst 12 is composed of more than 500 atoms in total. The surface 12a of the metal catalyst 12 has only a (111) face. <P>COPYRIGHT: (C)2008,JPO&INPIT |
