US 7,468,219 B2
	Fuel cell
Masao Abe, Osaka (Japan); Akira Ohtani, Osaka (Japan); and Kuniaki Ishibashi, Osaka (Japan)
Assigned to Nitto Denko Corporation, Osaka (Japan)
Appl. No. 10/149,227 PCT Filed Dec. 04, 2000, PCT No. PCT/JP00/08594 § 371(c)(1), (2), (4) Date Oct. 08, 2002, PCT Pub. No. WO01/43215, PCT Pub. Date Jun. 14, 2001.
Claims priority of application No. 11-352378 (JP), filed on Dec. 10, 1999; and application No. 2000-323818 (JP), filed on Oct. 24, 2000.
Prior Publication US 2003/0113611 A1, Jun. 19, 2003
Int. Cl. H01M 4/86 (2006.01); H01M 4/90 (2006.01)

U.S. Cl. 429—42  [429/44]

5 Claims

1. A fuel cell which comprises a cathode, an anode, a solid polymer electrolyte sandwiched therebetween, a means to supply oxygen as an oxidizing agent gas to the cathode, a means to supply hydrogen as a reducing agent gas to the anode, wherein the cathode has electroconductive polyaniline, polyalkylaniline, or polyindole as a p-type electroconductive organic polymer and the anode has electroconductive poly(o-phenylenediamine), polypyridine, polyquinoxaline, or polyphenylquinoxaline as an n-type electroconductive organic polymer, each as an electrode catalyst, and wherein both of the electroconductive organic polymers have an oxidation-reduction function, contain a polymer sulfonic acid as a dopant and are admixed with and an inorganic oxidation-reduction catalyst.