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. 19, 2013
Filed:
Jul. 24, 2012
Shinji Yamamoto, Yokosuka, JP;
Miyuki Terado, Kawasaki, JP;
Masahiro Yamamoto, Yokohama, JP;
Kenichi Ochiai, Atsugi, JP;
Shinji Yamamoto, Yokosuka, JP;
Miyuki Terado, Kawasaki, JP;
Masahiro Yamamoto, Yokohama, JP;
Kenichi Ochiai, Atsugi, JP;
Nissan Motor Co., Ltd., Kanagawa-ken, JP;
Abstract
A gas diffusion electrode material of the present invention includes: a porous body () formed of continuous and discontinuous polytetrafluoroethylene microfibers () and having three-dimensionally continuous micropores (); and a conductive material () supported on the porous body (). Moreover, a density of the polytetrafluoroethylene microfiber () is lower in a surface region (A) of a cross section of the porous body () than in an intermediate region (B) of the cross section. In accordance with the present invention, the polytetrafluoroethylene having the predetermined three-dimensional structure is used, and so on. Therefore, it is possible to provide a gas diffusion electrode material excellent in power generation characteristics and durability.