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. 31, 2012
Filed:
Dec. 20, 2006
Hitoshi Matsuoka, Yamaguchi, JP;
Kenji Fukuta, Yamaguchi, JP;
Hitoshi Matsuoka, Yamaguchi, JP;
Kenji Fukuta, Yamaguchi, JP;
Tokuyama Corporation, , JP;
Abstract
An object of the present invention is to provide an electrolyte membrane-electrode membrane assembly for a solid polymer fuel cell having superior characteristics, wherein a gas diffusion electrode membrane and a solid electrolyte membrane are well bonded, and electrode catalysts are uniformly-dispersed to obtain high electrode activity, a production method thereof and a fuel cell equipped therewith. The electrolyte membrane-electrode membrane assembly of the present invention is produced by jointing a molded membrane for forming a gas diffusion electrode membrane formed by a paste composition including a polymeric organic compound having a quaternary base forming functional group and an electrode catalyst, with a quaternary base anion-exchange resin precursor membrane for forming a solid electrolyte membrane having a quaternary base forming functional group; forming of a quaternary base anion-exchange group by bonding a polyfunctional quaternarizing agent to the quaternary base forming functional group included in each of said molded membrane and said precursor membrane via each functional group of the polyfunctional quaternarizing agent which is present around the bonded interface of both membranes to thereby crosslink the formed anion-exchange resins in both membranes via the polyfunctional quaternarizing agent simultaneously; and subjecting the non-quaternarized residue of the quaternary base forming functional groups in thus-obtained assembly to a quaternary base forming treatment. A fuel cell comprising thus-produced electrolyte membrane-electrode membrane assembly is excellent in bonding property, durability and output voltage.