Title:
NEGATIVE ELECTRODE SHEET AND PREPARATION METHOD THEREFOR, AND LITHIUM-ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2023/142319
Kind Code:
A1
Abstract:
The present invention provides a negative electrode sheet and a preparation method therefor, and a lithium-ion battery. The preparation method for the negative electrode sheet comprises: coating a side surface of a current collector with a negative electrode slurry to obtain a current collector containing a negative electrode slurry layer, the negative electrode slurry comprising a conductive agent, a negative active material, a binder, and a solvent; and carrying out tip discharge on the current collector containing the negative electrode slurry layer, such that the negative active material and the conductive agent are arranged in the direction of an electric field, and drying the negative active material and the conductive agent to obtain the negative electrode sheet. The method can improve the conductivity, the energy density and the rate capability of the battery, without increasing the cost of raw materials and formulas.
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Inventors:
WANG ZHANZHOU (CN)
JIANG YISHENG (CN)
ZHANG HAOYANG (CN)
JIANG YISHENG (CN)
ZHANG HAOYANG (CN)
Application Number:
PCT/CN2022/094762
Publication Date:
August 03, 2023
Filing Date:
May 24, 2022
Export Citation:
Assignee:
HENGDIAN GROUP DMEGC MAGNETICS CO LTD (CN)
International Classes:
H01M4/04; H01M4/133; H01M4/1393; H01M10/0525
Foreign References:
| CN104201384A | 2014-12-10 | |||
| CN103137944A | 2013-06-05 | |||
| CN106876660A | 2017-06-20 | |||
| US20200212433A1 | 2020-07-02 | |||
| CN202210096693A | 2022-01-26 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P. C. (CN)
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