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. 06, 2012
Filed:
Jun. 21, 2011
Hisashi Chigusa, Yokohama, JP;
Katsumi Ichikawa, Kumagaya, JP;
Hitoshi Koda, Yokohama, JO;
Akiko Fujisawa, Kawasaki, JP;
Shinichi Onodera, Tokyo, JP;
Hiroaki Wakamatsu, Yokohama, JP;
Shinichi Kanbayashi, Yokohama, JP;
Naoyuki Takazawa, Yokohama, JP;
Hisashi Chigusa, Yokohama, JP;
Katsumi Ichikawa, Kumagaya, JP;
Hitoshi Koda, Yokohama, JO;
Akiko Fujisawa, Kawasaki, JP;
Shinichi Onodera, Tokyo, JP;
Hiroaki Wakamatsu, Yokohama, JP;
Shinichi Kanbayashi, Yokohama, JP;
Naoyuki Takazawa, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
According to one embodiment, a fuel cell includes a membrane electrode assembly including a plurality of unit cells which are composed of an electrolyte membrane, an anode including anode catalyst layers arranged at intervals on one of surfaces of the electrolyte membrane, and anode gas diffusion layers stacked on the anode catalyst layers, and a cathode including cathode catalyst layers arranged at intervals on the other surface of the electrolyte membrane and opposed to the anode catalyst layers, respectively, and cathode gas diffusion layers stacked on the cathode catalyst layers, wherein a thickness of at least one of the anode catalyst layer and the cathode catalyst layer of one of the unit cells, which neighbor each other, gradually decreases toward the other of the unit cells.