US 7,320,841 B2
Fuel cell and separator structure used therein
Kenji Yamaga, Hitachi (Japan); Hiroshi Yamauchi, Hitachi (Japan); and Ko Takahashi, Hitachi (Japan)
Assigned to Hitachi, Ltd., Tokyo (Japan)
Filed on Feb. 26, 2004, as Appl. No. 10/785,988.
Claims priority of application No. 2003-365958 (JP), filed on Oct. 27, 2003.
Prior Publication US 2005/0089747 A1, Apr. 28, 2005
Int. Cl. H01M 8/02 (2006.01); H01M 8/10 (2006.01); H01M 4/94 (2006.01)
U.S. Cl. 429—35  [429/38] 22 Claims
OG exemplary drawing
 
12. A separator structure comprising a separator in which a gas manifold and gas passage section are formed, a seal sheet which seals the separator periphery, a gas diffusion layer which is placed so as to come into contact with the seal sheet, and a comb teeth structure, having comb teeth, provided on the gas diffusion layer, wherein the gas manifold and the diffusion layer are in communication with each other via slit spaces between the comb teeth in the comb teeth structure, and wherein the diffusion layer is of a porous material and the comb teeth structure is part of the diffusion layer.