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. 25, 2020
Filed:
Dec. 27, 2017
Applicant:
Showa Denko K.k., Tokyo, JP;
Inventors:
Suguru Sakaguchi, Tokyo, JP;
Yoshishige Okuno, Tokyo, JP;
Takuya Imai, Tokyo, JP;
Kunchan Lee, Tokyo, JP;
Assignee:
SHOWA DENKO K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 27/04 (2006.01); B01J 27/045 (2006.01); B01J 27/047 (2006.01); B01J 27/051 (2006.01); H01M 4/92 (2006.01); H01M 8/10 (2016.01); B01J 27/043 (2006.01);
U.S. Cl.
CPC ...
H01M 4/926 (2013.01); B01J 27/043 (2013.01); B01J 27/0515 (2013.01); H01M 4/923 (2013.01); H01M 8/10 (2013.01);
Abstract
The present invention relates to an oxygen reduction catalyst, an electrode, a membrane electrode assembly, and a fuel cell, and the oxygen reduction catalyst is an oxygen reduction catalyst containing substituted CoS, in which the substituted CoShas a cubic crystal structure, the oxygen reduction catalyst contains the substituted CoSwithin 0.83 nm from the surface thereof, and the substituted CoShas at least one substitutional atom selected from the group consisting of Cr, Mo, Mn, Tc, Re, Rh, Cu, and Ag in some of Co atom sites.