Title:
SECONDARY BATTERY AND BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/220863
Kind Code:
A1
Abstract:
The present application relates to a secondary battery, which comprises an electrolyte solution and a positive electrode plate, wherein the electrolyte solution comprises the compound of formula (I); and the positive electrode plate comprises a positive electrode active material, and the surface residual lithium content of the positive electrode active material is 20 ppm to 2000 ppm. The secondary battery of the present application has significantly improved cycle life and storage life. The present application further relates to a battery module, a battery pack and an electric device comprising the secondary battery.
Inventors:
PENG CHANG (CN)
CHEN PEIPEI (CN)
ZOU HAILIN (CN)
WU DEGUI (CN)
CHEN PEIPEI (CN)
ZOU HAILIN (CN)
WU DEGUI (CN)
Application Number:
PCT/CN2022/093059
Publication Date:
November 23, 2023
Filing Date:
May 16, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M10/0567; H01M4/36; H01M4/58
Foreign References:
| CN114039094A | 2022-02-11 | |||
| CN111193008A | 2020-05-22 | |||
| CN110383565A | 2019-10-25 | |||
| CN105074994A | 2015-11-18 | |||
| CN101263628A | 2008-09-10 | |||
| GB97252007TA |
Other References:
See also references of EP 4303981A4
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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