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. 15, 2006
Filed:
Jul. 01, 2002
Kazuhiko Iwasaki, Hiki-gun, JP;
Tsugio Ohba, Asaka, JP;
Takeshi Miyama, Asaka, JP;
Minako Onodera, Bunkyo-ku, JP;
Kazuhiko Iwasaki, Hiki-gun, JP;
Tsugio Ohba, Asaka, JP;
Takeshi Miyama, Asaka, JP;
Minako Onodera, Bunkyo-ku, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A fuel cell provides a high output at a high current density. The fuel cell has an anode electrode and a cathode electrode comprising a gas diffusion layer, a water-repellent layer disposed on the gas diffusion layer and containing a carbon material and polytetrafluoroethylene, and an electrode catalyst layer disposed on the water-repellent layer and containing a carbon material carrying a catalyst. The electrode catalyst layer has maximum and minimum thicknesses that differ from each other by less than 30 μm. The electrode catalyst layer has cracks whose area is less than 10% of a total area of the electrode catalyst layer.