Patent Number: 7,709,413

Title: Solid catalysts and fuel cell employing the solid catalysts

Abstract: A solid catalyst has a close-packed structure and has a first surface layer and a second surface layer, wherein the first surface layer includes platinum as a main component and the second surface layer contains Pt.sub.aX.sub.b (wherein X is one element selected from the group consisting of Zr, Hf, Nb, Ta, Mo, and W; a+b=100; and 25.ltoreq.b.ltoreq.50); and a fuel cell includes the solid catalyst as an anode-side electrode catalyst.

Inventors: Yoshida; Takashi (Kashiwa, JP), Itoh; Satoshi (Omitama, JP), Aiga; Fumihiko (Yokohama, JP), Hiraoka; Yoshiko (Kawasaki, JP), Yoshimura; Reiko (Kawasaki, JP), Tada; Tsukasa (Hachioji, JP), Nishida; Yasutaka (Fuchu, JP)

Assignee: Kabuhsiki Kaisha Toshiba

International Classification: B01J 23/00 (20060101); B01J 23/40 (20060101); B01J 23/42 (20060101); B01J 23/44 (20060101)

Expiration Date: 5/04/12018