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:
Mar. 18, 2025
Filed:
May. 15, 2020
Btr New Material Group Co., Ltd., Guangdong, CN;
Jingwei Wang, Guangdong, CN;
Chunlei Pang, Guangdong, CN;
Tengyu Liang, Guangdong, CN;
Jianguo Ren, Guangdong, CN;
Min Yue, Guangdong, CN;
Xueqin He, Guangdong, CN;
BTR NEW MATERIAL GROUP CO., LTD., Guangdong, CN;
Abstract
A preparation method obtains silicon oxide/carbon composite negative electrode material and a lithium-ion battery. The silicon oxide/carbon composite negative electrode material is a secondary particle, and mainly consists of a SiOx/C material. The SiOx/C material includes SiOx particles and a carbon layer with which the surfaces of the SiOx particles are coated. The SiOx particles include Si crystallites. The preparation method includes: 1) synthesizing a silicon oxide bulk; 2) performing crushing to obtain micro-level or nano-level SiOx particles; 3) mixing with a carbon binder; 4) granulating; 5) modification and carbonization; and 6) post-processing.