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:
Jan. 20, 2026
Filed:
Apr. 17, 2023
Robert Bosch Gmbh, Stuttgart, DE;
Bicheng Chen, Shanghai, CN;
Xu Zhang, Shanghai, CN;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for preparing a cathode catalyst layer structure for a membrane electrode assembly of a fuel cell includes forming a cathode catalyst layer structure having at least a first catalyst layer and a second catalyst layer. The second catalyst layer is configured to be positioned closer to a proton exchange membrane of the membrane electrode assembly than the first catalyst layer, the first catalyst layer is formed from a first slurry, and the second catalyst layer is formed from a second slurry. An average particle diameter of a platinum catalyst, a specific surface area of a carbon support, an I/C ratio, and a weight percentage of the platinum catalyst are selected based on the total weight of the carbon support and the platinum catalyst in each of the first slurry and the second slurry.