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. 22, 2026
Filed:
Jun. 08, 2023
Toppan Inc., Tokyo, JP;
Madoka Ozawa, Tokyo, JP;
Atsuhiro Kawamura, Kitakatsushika-gun, JP;
TOPPAN INC., Tokyo, JP;
Abstract
An electrode catalyst layer, a membrane electrode assembly, and a polymer electrolyte fuel cell, which are capable of improving material transport properties and proton conductivity in the electrode catalyst layer, and which are capable of exhibiting high power generation performance over the long term and have good durability. The electrode catalyst layer for use in a polymer electrolyte fuel cell, and includes: a catalyst material; a conductive carrier that supports the catalyst material; a polymer electrolyte; and a fibrous material, wherein the fibrous material contains a material having nitrogen atoms, and the content of the fibrous material in the electrode catalyst layer is 1 wt % or more and less than 12 wt %.