Title:
NEGATIVE ELECTRODE PLATE AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND POWER-CONSUMING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/040355
Kind Code:
A1
Abstract:
Disclosed in the present application are a negative electrode plate and a preparation method therefor, a secondary battery, a battery module, a battery pack and a power-consuming apparatus. The negative electrode plate comprises a negative electrode current collector and a negative electrode film layer, which is arranged on at least one surface of the negative electrode current collector and comprises a negative electrode active material, wherein at least part of the surface of the negative electrode active material is provided with an artificial solid electrolyte interface film, the artificial solid electrolyte interface film comprises a first inorganic lithium salt, and the first inorganic lithium salt is selected from one or two of Li2CO3 and Li2SO3. The negative electrode plate of the present application can effectively reduce the gas production of a secondary battery and improve the storage performance of the secondary battery.
Inventors:
XIE LAN (CN)
SHI SONGJUN (CN)
SHA YING (CN)
LIN ZHEN (CN)
LI WEI (CN)
SHI SONGJUN (CN)
SHA YING (CN)
LIN ZHEN (CN)
LI WEI (CN)
Application Number:
PCT/CN2022/096212
Publication Date:
March 23, 2023
Filing Date:
May 31, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/13; H01M4/133; H01M4/134; H01M4/139; H01M4/1393; H01M4/1395; H01M10/0525; H01M10/054; H01M10/42
Foreign References:
| CN113169306A | 2021-07-23 | |||
| CN110998916A | 2020-04-10 | |||
| CN107768625A | 2018-03-06 | |||
| CN105742569A | 2016-07-06 | |||
| CN108461714A | 2018-08-28 | |||
| JP2010160983A | 2010-07-22 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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