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. 27, 2020
Filed:
Dec. 16, 2016
Toray Industries, Inc., Tokyo, JP;
Toru Miyake, Otsu, JP;
Masamichi Utsunomiya, Otsu, JP;
Yasuaki Tanimura, Otsu, JP;
Kazuyo Shigeta, Otsu, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
A gas diffusion electrode has a microporous layer on at least one surface of an electrical conducting porous substrate. The microporous layer has at least a first microporous layer in contact with the electrical conducting porous substrate, and a second microporous layer. The gas diffusion electrode has a pore size distribution with a peak at least in a first region of 10 μm or more and 100 μm or less, a second region of 0.2 μm or more and less than 1.0 μm, and a third region of 0.050 μm or more and less than 0.2 μm. The total volume of the pores in the second region is 10% or more and 40% or less of the total volume of the pores in the first region, and the total volume of the pores in the third region is 40% or more and 80% or less of the total volume of the pores in the second region.