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:
Nov. 09, 2010
Filed:
Jun. 10, 2004
Shigeki Nomura, Ibaraki, JP;
Toshihito Miyama, Ibaraki, JP;
Shigeki Nomura, Ibaraki, JP;
Toshihito Miyama, Ibaraki, JP;
Sekisui Chemical Co., Ltd., Osaka, JP;
Abstract
An object of the present invention is to solve the problems with conventional polymer electrolyte fuel cells and provide a proton conducting membrane which exhibits an excellent heat resistance and an excellent protonic conductivity and a high dimensional stability even at high temperatures, a method for producing the same and a fuel cell using the same. The proton conducting membrane of the present invention is a proton conducting membrane having particles 1 comprising a metal-oxygen crosslinked structure and the particles 1 have an acid group such as sulfonic acid group incorporated in the surface thereof and form a continuity. The gap 2 between the particles is communicated from the main surface to the opposite surface of the proton conducting membrane to form a proton conducting channel.