Title:
NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/001581
Kind Code:
A1
Abstract:
The present application provides a negative electrode material, a preparation method therefor, and a battery. The negative electrode material comprises a first silicon material layer, and a buffer layer, a second silicon material layer and a coating layer, which are sequentially arranged on the surface of the first silicon material layer, wherein the density of the first silicon material layer is less than the density of the second silicon material layer. The negative electrode material of the present application has controllable volume expansion, a stable electrolyte solution interface, and a high reversible capacity.
Inventors:
HE PENG (CN)
REN JIANGUO (CN)
HE XUEQIN (CN)
GUO EMING (CN)
REN JIANGUO (CN)
HE XUEQIN (CN)
GUO EMING (CN)
Application Number:
PCT/CN2023/094432
Publication Date:
January 04, 2024
Filing Date:
May 16, 2023
Export Citation:
Assignee:
BTR NEW MAT GROUP CO LTD (CN)
International Classes:
H01M4/36; H01M4/38; H01M4/587
Foreign References:
| CN115911341A | 2023-04-04 | |||
| CN104091934A | 2014-10-08 | |||
| CN112204766A | 2021-01-08 | |||
| CN109888246A | 2019-06-14 | |||
| CN106941170A | 2017-07-11 | |||
| JP2015049965A | 2015-03-16 |
Attorney, Agent or Firm:
UNI-INTEL PATENT AND TRADEMARK LAW FIRM (CN)
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