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:
Apr. 25, 2023
Filed:
Mar. 27, 2020
Beijing Iametal New Energy Technology Co., Ltd, Beijing, CN;
Yuguo Guo, Beijing, CN;
Linbo Huang, Beijing, CN;
Quan Xu, Beijing, CN;
Yaxia Yin, Beijing, CN;
Fengshu Yue, Beijing, CN;
Jun Yao, Beijing, CN;
Anguang Zhao, Beijing, CN;
BEIJING IAMETAL NEW ENERGY TECHNOLOGY CO., LTD, Beijing, CN;
Abstract
A preparation method of silicon-based composite negative electrode material for a lithium battery includes the following steps: forming steam from a raw material A containing Si and a reducing substance raw material B capable of reacting to generate a silicate under a vacuum heating condition, condensing and depositing in a deposition system after a reaction, and then carrying out carbon coating to obtain the silicon-based composite material. A certain amount of alloy is added into the raw material B, so that a proportion of a crystal region in the silicon-based composite material can be reduced, and the initial coulombic efficiency and the cycling stability of the negative electrode material are further improved.