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:
May. 21, 2019
Filed:
Mar. 21, 2014
Honda Motor Co., Ltd., Minato-Ku, Tokyo, JP;
Takao Fukumizu, Utsunomiya, JP;
Hiroshi Matsumori, Utsunomiya, JP;
Yoichi Asano, Utsunomiya, JP;
Takuma Yamawaki, Utsunomiya, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A membrane electrode assembly is prepared by sandwiching an electrolyte membrane between an anode and a cathode. In the anode, a first porous layer is interposed between a first electrode catalyst layer and a first gas diffusion layer. In the cathode, a second porous layer is interposed between a second electrode catalyst layer and a second gas diffusion layer. A first piled body of the first gas diffusion layer and the first porous layer has a percolation pressure higher than that of a second piled body containing the second gas diffusion layer and the second porous layer. The first piled body has a percolation pressure of 25 to 120 kPa, and the second piled body has a percolation pressure of 5 to 25 kPa.