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:
Jul. 22, 2025
Filed:
Oct. 08, 2021
Applicant:
The Regents of the University of California, Oakland, CA (US);
Inventors:
Zheng Chen, San Diego, CA (US);
Panpan Xu, San Diego, CA (US);
Assignee:
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, Oakland, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/54 (2006.01); C22B 7/00 (2006.01); C22B 26/12 (2006.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/58 (2010.01);
U.S. Cl.
CPC ...
H01M 10/54 (2013.01); C22B 7/006 (2013.01); C22B 26/12 (2013.01); H01M 4/0471 (2013.01); H01M 4/049 (2013.01); H01M 4/5825 (2013.01); H01M 2004/028 (2013.01);
Abstract
A method for regeneration of spent cathode material of lithium-ion batteries involves lithiating the cathode material in a relithiation solution including a reducing agent at a temperature in the range of 60° C. to 180° C. for a sufficient time to heal composition defects in the cathode material. The lithiated material is then sintered to completely recover the properties. The relithiation solution may be a Li-ion source combined with nature-based organic reducing agent such as citric acid, ascorbic acid, tartaric acid, or similar.