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.

Date of Patent:
Aug. 12, 2025

Filed:

Jun. 16, 2022
Applicant:

Robert Bosch Gmbh, Stuttgart, DE;

Inventors:

Daniil A. Kitchaev, Brookline, MA (US);

Mordechai Kornbluth, Brighton, MA (US);

Lei Cheng, San Jose, CA (US);

Jonathan Braaten, Sunnyvale, CA (US);

Christina Johnston, Mountain View, CA (US);

Assignee:

Robert Bosch GmbH, Stuttgart, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/92 (2006.01); H01M 4/86 (2006.01); H01M 4/88 (2006.01); H01M 4/90 (2006.01);
U.S. Cl.
CPC ...
H01M 4/92 (2013.01); H01M 4/8631 (2013.01); H01M 4/8892 (2013.01); H01M 4/9083 (2013.01);
Abstract

Microcracked and crack-free catalyst layers such as for electrodes in electrochemical cells (e.g., fuel cells) and method of making the same are disclosed. The microcracks may improve durability by better tolerating stresses without inducing or propagating into macrocracks. The microcracks also improve efficiency by providing reactant (e.g., oxygen) passages to catalyst in the catalyst layer. The microcracks may be formed in a predetermined pattern to further localize additional reactant passages is conventionally starved or more starved locations.


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