US 7,320,842 B2
Electrode catalyst for fuel cell and fuel cell using the same
Junichi Ozaki, 378-11, Aioi-cho, 1-chome, Kiryu-shi, Gunma-ken (Japan); Asao Ooya, 642-5, Hishi-machi 5-chome, Kiryu-shi, Gunma-ken (Japan); and Akira Hamada, Moriguchi (Japan)
Assigned to Sanyo Electric Co., Ltd., Moriguchi-shi (Japan); Junichi Ozaki, Kiryu-shi (Japan); and Asao Ooya, Kiryu-shi (Japan)
Filed on Feb. 24, 2003, as Appl. No. 10/371,185.
Claims priority of application No. 2002-050381 (JP), filed on Feb. 26, 2002.
Prior Publication US 2003/0175580 A1, Sep. 18, 2003
Int. Cl. H01M 4/96 (2006.01); H01M 4/88 (2006.01); H01M 10/10 (2006.01)
U.S. Cl. 429—44  [429/42; 502/101] 2 Claims
OG exemplary drawing
 
1. A fuel cell, comprising:
a cathode and an anode; and
a layer comprising an electrode catalyst on the cathode or the anode. said electrode catalyst comprising graphitization-resistant carbon, at least a portion of the electrode catalyst having a random layer structure developed into lamination shell layers. said electrode catalyst being formed into a layer on at least one side of a solid polymer electrolyte film,
wherein said random layer structure is a carbon nano-onion structure in which the lamination shell layers wind around metal particles.