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:
Jul. 19, 2011
Filed:
Jul. 12, 2005
Yoichiro Tsuji, Osaka, JP;
Yasuhiro Ueyama, Hyogo, JP;
Makoto Uchida, Osaka, JP;
Yusuke Ozaki, Nara, JP;
Yoichiro Tsuji, Osaka, JP;
Yasuhiro Ueyama, Hyogo, JP;
Makoto Uchida, Osaka, JP;
Yusuke Ozaki, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A solid polymer electrolyte fuel cell includes a membrane electrode assembly having an anode, a cathode arranged facing the anode, and a polyelectrolyte membrane arranged between the anode and the cathode, and a pair of separator plates that are arranged facing each other so as to sandwich the membrane electrode assembly, and have an anode side gas channel for supplying a fuel gas to the anode, and a cathode side gas channel for supplying an oxidant gas to the cathode, formed thereon, wherein the catalyst layer of the anode contains at least one electrode catalyst selected from the group consisting of Pt particles and Pt alloy particles, having a particle diameter of from 6 to 10 nm, the catalyst layer of the anode has a thickness of from 1 to 5 μm, Pt volume density in the catalyst layer of the anode is from 1 to 5 g/cm, the catalyst layer of the cathode has a thickness of 10 μm or more, and Pt volume density in the catalyst layer of the cathode is from 0.1 to 0.5 g/cm.