The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 30, 2004
Filed:
Sep. 28, 2001
Kiyoshi Yamaura, Kanagawa, JP;
Minehisa Imazato, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A fuel cell in which optimum proton conductivity is maintained even in a dry atmosphere and in which the output is not lowered is provided. The fuel cell of the present invention includes a fuel electrode, an oxygen electrode and a proton conductor film disposed therebetween. The fuel electrode and the oxygen electrode are formed of powders of a carbonaceous material as an electrode material. A proton conductor composed of a carbonaceous material mainly composed of carbon and proton dissociative groups introduced into the carbonaceous material is present on the surfaces of the fuel and/or oxygen electrodes. The proton conductor can exhibit optimum proton conductivity without humidification.