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:
Feb. 08, 2011
Filed:
Jul. 05, 2005
Yoshihiro Hori, Nara, JP;
Mikiko Yoshimura, Tokyo, JP;
Yoichiro Tsuji, Osaka, JP;
Takeshi Yonamine, Osaka, JP;
Masaki Yamauchi, Osaka, JP;
Yoshihiro Hori, Nara, JP;
Mikiko Yoshimura, Tokyo, JP;
Yoichiro Tsuji, Osaka, JP;
Takeshi Yonamine, Osaka, JP;
Masaki Yamauchi, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Asahi Glass Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a gas diffusion electrode capable of sufficiently preventing not only degradation of MEA during storage but also degradation of initial characteristics and durability during the time period from production to initial use, and a polymer electrolyte fuel cell including the gas diffusion electrode. The gas diffusion electrode includes a catalyst layer in which Arepresenting a total mass of organic substance comprising alcohol, a partial oxide of the alcohol, a product of intramolecular dehydrogenation reaction of the alcohol, a product of intermolecular condensation reaction of the alcohol, a product of intermolecular condensation reaction between the alcohol and the partial oxide and a product of intermolecular condensation reaction of the partial oxide, Erepresenting a total mass of carbon powder and Grepresenting a total mass of cation exchange resin are controlled to satisfy {100×A/(E+G)}≦0.05.