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:
Apr. 26, 2016
Filed:
Oct. 26, 2011
Kazuhiro Sumioka, Aichi, JP;
Yoshihiro Sako, Hiroshima, JP;
Kazuhiro Sumioka, Aichi, JP;
Yoshihiro Sako, Hiroshima, JP;
MITSUBISHI RAYON CO., LTD., Tokyo, JP;
Abstract
Provided are: a porous electrode substrate which has excellent handling properties and surface smoothness and satisfactory gas permeability and electrical conductivity, and enables the reduction of damage to a polymer electrolyte membrane when integrated into a fuel cell; and a process for producing the porous electrode substrate. Specifically provided are: a porous electrode substrate comprising a three-dimensional structure (Y-) produced by bonding short carbon fibers through carbon and a three-dimensional structure (Y-) produced by bonding short carbon fibers through carbon, wherein the three-dimensional structures (Y-) and (Y-) are layer stacked on and integrated with each other, the short carbon fibers form a three-dimensional entangled structure in the structure (Y-), and the short carbon fibers do not form a three-dimensional entangled structure in the structure (Y-); a process for producing the electrode base material; a precursor sheet for producing the electrode base material; a membrane-electrode assembly which involves the electrode base material; and a polymer electrolyte fuel cell.