Title:
POSITIVE ELECTRODE PLATE AND PREPARATION METHOD THEREFOR, SECONDARY BATTERY AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/040471
Kind Code:
A1
Abstract:
The present application provides a positive electrode plate and a preparation method therefor, a secondary battery and an electric device. The positive electrode plate comprises a positive current collector and a positive film layer, the positive current collector comprises a support layer and a conductive layer arranged on at least one surface of the support layer, the positive film layer is provided on a surface of the conductive layer away from the support layer, the positive film layer is formed by dry positive electrode powder including a positive electrode active material, and a protective layer is at least provided on a surface of the positive film layer away from the support layer. When the positive electrode plate is applied to a secondary battery, the cycling performance and storage performance of the secondary battery can be effectively improved.
Inventors:
ZHANG YU (CN)
WEI GUANJIE (CN)
LI XING (CN)
MENG ZHEN (CN)
ZHU JIAZHE (CN)
ZHANG QIANQIAN (CN)
FU HANLI (CN)
WEI GUANJIE (CN)
LI XING (CN)
MENG ZHEN (CN)
ZHU JIAZHE (CN)
ZHANG QIANQIAN (CN)
FU HANLI (CN)
Application Number:
PCT/CN2022/114514
Publication Date:
February 29, 2024
Filing Date:
August 24, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/13; H01M4/04; H01M4/139
Foreign References:
| CN106654177A | 2017-05-10 | |||
| CN108604667A | 2018-09-28 | |||
| JP2012174401A | 2012-09-10 | |||
| CN114335409A | 2022-04-12 |
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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