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:
Jan. 08, 2008
Filed:
Feb. 26, 2003
Eiichi Yasumoto, Kyoto, JP;
Akihiko Yoshida, Hirakata, JP;
Makoto Uchida, Hirakata, JP;
Junji Morita, Moriguchi, JP;
Yasushi Sugawara, Higashiosaka, JP;
Teruhisa Kanbara, Toyonaka, JP;
Eiichi Yasumoto, Kyoto, JP;
Akihiko Yoshida, Hirakata, JP;
Makoto Uchida, Hirakata, JP;
Junji Morita, Moriguchi, JP;
Yasushi Sugawara, Higashiosaka, JP;
Teruhisa Kanbara, Toyonaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A polymer electrolyte fuel cell comprising: a hydrogen ion-conductive polymer electrolyte membrane; an anode and a cathode with the electrolyte membrane interposed therebetween; an anode-side conductive separator having a gas flow channel for supply of a fuel gas to the anode; and a cathode-side conductive separator having a gas flow channel for supply of an oxidant gas to the cathode, wherein each of the anode and the cathode comprises at least a catalyst layer in contact with the electrolyte membrane and a gas diffusion layer in contact with the catalyst layer and the separator, and at least one of the anode and the cathode contains a compound represented by the formula (I):R—O—{(CHO)—(CHO)}—R  (I)where Rand Rare independent of each other and each represents a hydrogen atom or an alkyl group having not less than 5 and not more than 15 carbon atoms, n and m are integers which satisfy 0≦n≦5, 0≦m≦5 and 1≦n+m≦5, and when neither n nor m is 0, at least one of the ethylene oxide group and at least one of the propylene oxide group are arranged in a random fashion.