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. 19, 2022
Filed:
Nov. 05, 2019
Toray Industries, Inc., Tokyo, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
A low-cost gas diffusion electrode is described that overcomes defects of conventional techniques, that achieves both dry-up resistance and flooding resistance, and that has satisfactory power generation performance, where the gas diffusion electrode includes a conductive porous substrate, and a microporous layer containing conductive fine particles and provided on at least one surface of the conductive porous substrate. The gas diffusion electrode has, based on the number of fine pores having an area of 0.25 μmor more that are observed in a cross section of the microporous layer in a thickness direction, a percentage of fine pores having a circularity of 0.5 or more of 50% or more and 100% or less.