Title:
【発明の名称】燃料電池
Document Type and Number:
Japanese Patent JP3326254
Kind Code:
B2
Abstract:
PURPOSE:To suppress a drop in catalyst utilization on discharge to enhance the cell performance of a polymer electrolyte fuel cell with a thin electrode catalyst layer comprising an electrolyte and catalyst-supporting carbon. CONSTITUTION:A fuel cell consists of an electrolyte film made of a solid polymer, a fuel electrode and an air electrode placed on both sides of the electrolyte film, and the fuel electrode and the air electrode have a catalyst layer arranged so as to come in contact with the electrolyte film surface respectively. The catalyst layer is fabricated with carbon particles, a solid electrolyte, and a metallic catalyst which is supported on the carbon particle. The composite ratio of the metallic catalyst and the electrolyte in the catalyst layer to the carbon particles, which form an opposite side portion to the electrolyte film, of the electrolyte film is larger than the composite ratio of the metallic catalyst and the electrolyte in the catalyst layer to the carbon particles, which form an electrolyte side portion, of the electrolyte film.
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Inventors:
Tetsuya Haga
Masahiko Asaoka
Takahisa Suzuki
Kazuo Kawahara
Katsuji Abe
Tatsuya Kawahara
Masahiko Asaoka
Takahisa Suzuki
Kazuo Kawahara
Katsuji Abe
Tatsuya Kawahara
Application Number:
JP27995893A
Publication Date:
September 17, 2002
Filing Date:
November 09, 1993
Export Citation:
Assignee:
Toyota Central R & D Labs.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M4/96; H01M8/02; H01M8/10; (IPC1-7): H01M4/96; H01M8/02; H01M8/10
Domestic Patent References:
| JP5251086A | ||||
| JP4233164A | ||||
| JP62195855A |
Attorney, Agent or Firm:
Hiroshi Ohkawa