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:
Oct. 13, 2009
Filed:
Mar. 09, 2005
Ryoichiro Takahashi, Wako, JP;
Chikara Iwasawa, Wako, JP;
Masahiro Ise, Wako, JP;
Yoichi Asano, Wako, JP;
Hideki Watanabe, Sayama, JP;
Atsuhito Yoshizawa, Sayama, JP;
Takashi Suzuki, Sayama, JP;
Osamu Kakutani, Sayama, JP;
Ryoichiro Takahashi, Wako, JP;
Chikara Iwasawa, Wako, JP;
Masahiro Ise, Wako, JP;
Yoichi Asano, Wako, JP;
Hideki Watanabe, Sayama, JP;
Atsuhito Yoshizawa, Sayama, JP;
Takashi Suzuki, Sayama, JP;
Osamu Kakutani, Sayama, JP;
Honda Motor Co. Ltd., Tokyo, JP;
Abstract
In a polymer electrolyte fuel cell in which a cathode diffusion layer, a cathode electrode catalyst layer, a polymer electrolyte membrane, an anode electrode catalyst layer, and an anode diffusion layer are laminated in this order, electron conductivity of the cathode electrode catalyst layer at a portion on the side of the cathode diffusion layer is higher than at a portion on the side of the polymer electrolyte membrane and electron conductivity of the cathode electrode catalyst layer at the portion on the side of the polymer electrolyte membrane is lower than at the portion on the side of the cathode diffusion layer, and furthermore, electron conductivity of the anode electrode catalyst layer at a portion on the side of the anode diffusion layer is higher than at a portion on the side of the polymer electrolyte membrane and electron conductivity of the anode electrode catalyst layer at the portion on the side of the polymer electrolyte membrane is lower than at the portion on the side of the anode diffusion layer.