Title:
COMPOSITE NEGATIVE ELECTRODE MATERIAL, PREPARATION METHOD THEREFOR, NEGATIVE ELECTRODE PIECE, BATTERY, AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/169552
Kind Code:
A1
Abstract:
A composite negative electrode material, which comprises a core, a first coating layer coated on a surface of the core, and a second coating layer coating a surface of the first coating layer; the core includes silicon nanoparticles and titanium monoxide particles; the first coating layer comprises silicon monoxide; and the second coating layer comprises carbon fibers having a porous structure. The present application also provides a preparation method for the composite negative electrode material, a battery comprising a negative electrode piece, and an electric device comprising the battery, where the negative electrode piece comprises the composite negative electrode material.
Inventors:
HU JING (CN)
XI LIHUA (CN)
WU CHUCHU (CN)
XI LIHUA (CN)
WU CHUCHU (CN)
Application Number:
PCT/CN2023/080729
Publication Date:
September 14, 2023
Filing Date:
March 10, 2023
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
H01M4/62; H01M4/36; H01M4/38
Domestic Patent References:
| WO2022000589A1 | 2022-01-06 | |||
| WO2020260332A1 | 2020-12-30 |
Foreign References:
| CN110112405A | 2019-08-09 | |||
| CN104966822A | 2015-10-07 | |||
| CN109119617A | 2019-01-01 | |||
| CN111564611A | 2020-08-21 | |||
| CN113036135A | 2021-06-25 | |||
| CN113793934A | 2021-12-14 |
Attorney, Agent or Firm:
SHENZHEN HUISHI PATENT AGENT CO., LTD. (CN)
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