Title:
NEGATIVE ELECTRODE SLURRY, PREPARATION METHOD THEREFOR, NEGATIVE ELECTRODE SHEET, BATTERY CELL, BATTERY, AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/021086
Kind Code:
A1
Abstract:
The present application relates to the field of batteries. Provided are a negative electrode slurry and a preparation method therefor, a negative electrode sheet, a battery cell, a battery and an electric device. The negative electrode slurry comprises a negative electrode active substance, a dispersion stabilizer, a conductive agent, a binder and water. The conductive agent comprises a granular conductive agent and a linear conductive agent, at least part of the linear conductive agent coating the surfaces of the negative electrode active substance and the granular conductive agent. The specific surface area of the granular conductive agent is 60 m2/g-300 m2/g, the length of the linear conductive agent is 20 μm-120 μm, and the diameter of the linear conductive agent is not greater than 20 nm. The negative electrode slurry can effectively relieve the safety problem caused by cycle expansion during the cycle process of existing batteries, and can also enhance the energy density of batteries.
Inventors:
MU SAINAN (CN)
WANG NING (CN)
WANG XINGHUI (CN)
WEI ZHITING (CN)
WANG NING (CN)
WANG XINGHUI (CN)
WEI ZHITING (CN)
Application Number:
PCT/CN2022/109156
Publication Date:
February 01, 2024
Filing Date:
July 29, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/62
Foreign References:
| CN110571412A | 2019-12-13 | |||
| CN103545525A | 2014-01-29 | |||
| CN114068926A | 2022-02-18 | |||
| KR20210002051A | 2021-01-06 |
Attorney, Agent or Firm:
BEIJING WEIFEI LIANCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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