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:
Aug. 11, 2009
Filed:
Nov. 22, 2005
Tomoaki Arimura, Ome, JP;
Tomoaki Arimura, Ome, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A fuel cell comprises a unit cell having a membrane-like electrode unit including an electrolyte membrane, a fuel electrode consisting essentially of a catalyst layer and a diffusion layer, which are formed in the order mentioned on one surface of the electrolyte membrane, and an air electrode consisting essentially of a catalyst layer and a diffusion layer, which are formed in the order mentioned on the other surface of the electrolyte membrane. The diffusion layer of at least the fuel electrode includes a carbon paper prepared by laminating carbon fibers, and a specified water repellent polymer is arranged to cover the surface of the carbon fiber of the carbon paper or is loaded in the clearance among the carbon fibers.