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:
Sep. 21, 2010
Filed:
Sep. 09, 2005
Yoshinori Yanagita, Yokohama, JP;
Kohei Kita, Yokohama, JP;
Naoki Sakamoto, Fuji, JP;
Takehiro Koga, Fuji, JP;
Yoshinori Yanagita, Yokohama, JP;
Kohei Kita, Yokohama, JP;
Naoki Sakamoto, Fuji, JP;
Takehiro Koga, Fuji, JP;
Asahi Kasei Chemicals Corporation, Tokyo, JP;
Abstract
An object is to provide a solid polymer electrolyte membrane for solid polymer electrolyte fuel cell, which has high durability, as well as a membrane electrode assembly and a solid polymer electrolyte fuel cell, each containing the same. The solid polymer electrolyte membrane is produced using polymer electrolyte-containing solution preparation step of dissolving a perfluorocarbonsulfonic acid resin (component A) having an ion-exchange capacity of 0.5 to 3.0 meq/g, a polyazole-based compound (component B) and an alkali metal hydroxide in a protic solvent to prepare a polymer electrolyte-containing solution in which a weight ratio of the component A to component B, (A/B), is from 2.3 to 199 and a total weight of the component A and the component B is from 0.5 to 30% by weight. In a membrane formation step, a membrane is formed from the polymer electrolyte-containing solution.