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:
Dec. 10, 2024
Filed:
Aug. 01, 2019
Applicant:
Btr New Material Group Co., Ltd., Guangdong, CN;
Inventors:
Lijuan Qu, Guangdong Providence, CN;
Chunlei Pang, Guangdong Providence, CN;
Jianguo Ren, Guangdong Providence, CN;
Youyuan Huang, Guangdong Providence, CN;
Min Yue, Guangdong Providence, CN;
Assignee:
BTR New Material Group Co., Ltd., Shenzhen, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2010.01); H01M 4/04 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/5825 (2013.01); H01M 4/0471 (2013.01); H01M 10/0525 (2013.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01);
Abstract
Provided is a negative electrode material of a lithium ion secondary battery. The negative electrode material includes a carbon coating layer and a core layer. The core layer includes lithium polysilicate and silicon oxide, and silicon is uniformly embedded in the lithium polysilicate and/or in the silicon oxide. The negative electrode material has high first coulomb efficiency, long cycle performance, excellent rate performance and high safety.