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. 28, 2024
Filed:
Jul. 14, 2020
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Chengdu Liang, Ningde, CN;
Yuzhen Zhao, Ningde, CN;
Yingjie Guan, Ningde, CN;
Yan Wen, Ningde, CN;
Qisen Huang, Ningde, CN;
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Abstract
The present application discloses a negative active material, preparation process thereof and a secondary battery and the related battery module, battery pack and device. The negative active material comprises a core structure and a modified polymer coating layer coated on at least a part of the outer surface of the core structure, wherein the core structure comprises one or more of silicon-based materials and tin based materials; and wherein the negative active material has an infrared spectrum comprising an infrared absorption peak at the wavelength of 1450 cmto 1690 cm, and the infrared absorption peak has a transmittance T that satisfies 80%≤T≤99%.