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. 09, 2025
Filed:
May. 15, 2020
Btr New Material Group Co., Ltd., Guangdong, CN;
Dingyuan New Energy Technology Co., Ltd., Guangdong, CN;
Peng He, Guangdong, CN;
Eming Guo, Guangdong, CN;
Jianguo Ren, Guangdong, CN;
Xueqin He, Guangdong, CN;
BTR NEW MATERIAL GROUP CO., LTD., Guangdong, CN;
Abstract
A core-shell composite negative electrode material is made according to a preparation method and includes an application thereof. The composite negative electrode material includes: a core formed by a first active substance and a second active substance, and a carbon-coated shell serving as a third active substance. The first active substance is a sheet-like silicon-based material, the second active substance is a sheet-like graphite material, and the third substance is the carbon-coated shell. The composite material is applied to the negative electrode of a lithium ion battery, and has high specific capacity, wherein the capacity is greater than 400 mAh/g, and excellent cycle life.