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:
Oct. 17, 2017
Filed:
May. 31, 2012
Yozo Okuyama, Yokosuka, JP;
Shigemasa Kuwata, Yokohama, JP;
Kazufumi Kodama, Zushi, JP;
NISSAN MOTOR CO., LTD., Yokohama-shi, JP;
Abstract
A gas diffusion layer () for a fuel cell includes: a gas diffusion layer substrate (); and a microporous layer () containing a granular carbon material and scale-like graphite and formed on the gas diffusion layer substrate (). The microporous layer () includes a concentrated region () of the scale-like graphite that is formed into a belt-like shape extending in a direction approximately parallel to a junction surface () between the microporous layer () and the gas diffusion layer substrate (). Accordingly, both resistance to dry-out and resistance to flooding, which are generally in a trade-off relationship, in the gas diffusion layer can be ensured so as to contribute to an increase in performance of a polymer electrolyte fuel cell.