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:
May. 19, 2026
Filed:
Apr. 25, 2023
Applicant:
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Inventors:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/583 (2010.01); C01B 32/20 (2017.01); C01B 32/21 (2017.01); C01B 32/23 (2017.01); H01M 4/36 (2006.01); H01M 4/587 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/583 (2013.01); C01B 32/20 (2017.08); C01B 32/21 (2017.08); C01B 32/23 (2017.08); H01M 4/364 (2013.01); H01M 4/587 (2013.01); H01M 2004/027 (2013.01);
Abstract
This application provides a negative electrode active material and a preparation method thereof. The negative electrode active material may be self-embedded graphite composed of graphite A and graphite B, where the surface of the graphite A may have a tenon structure, the surface of the graphite B may have a mortise structure, the tenon structure of the graphite A and the mortise structure of the graphite B may be mutually embedded, and a hydrogen bond may be formed between the tenon structure of the graphite A and the mortise structure of the graphite B.