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:
Feb. 12, 2019
Filed:
Jul. 08, 2015
Bdf Ip Holdings Ltd., Vancouver, CA;
Alan Young, Surrey, CA;
Siyu Ye, Burnaby, CA;
Shanna D. Knights, North Vancouver, CA;
Kyoung Bai, Vancouver, CA;
BDF IP HOLDINGS LTD., Vancouver, CA;
Abstract
A membrane electrode assembly comprises an anode electrode comprising an anode gas diffusion layer and an anode catalyst layer; a cathode electrode comprising a cathode gas diffusion layer and a cathode catalyst layer; and a polymer electrolyte membrane interposed between the anode catalyst layer and the cathode catalyst layer; wherein the cathode catalyst layer comprises: a first cathode catalyst sublayer adjacent the polymer electrolyte membrane, the first cathode catalyst sublayer comprising a first catalyst supported on a first carbonaceous support and a second catalyst supported on a second carbonaceous support; and a second cathode catalyst sublayer adjacent the cathode gas diffusion layer, the second cathode catalyst sublayer comprising a third catalyst supported on a third carbonaceous support; wherein the first carbonaceous support is carbon black and the second and third carbonaceous supports are graphitized carbon.