Title:
ELECTROLYTE SOLUTION AND BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2024/078357
Kind Code:
A1
Abstract:
An electrolyte solution and a battery comprising same. The electrolyte solution comprises an organic solvent, a lithium salt and a functional additive. A first additive in the functional additive is a sulfonyl fluoride-based compound containing unsaturated bonds, wherein unsaturated double bonds thereof can undergo a polymerization reaction on a surface of a positive electrode to form a protective film, such that the oxidation resistance of a solid electrolyte membrane on the positive electrode side can be improved; substitution with fluorine atoms can further improve the oxidation resistance of the solid electrolyte membrane on the positive electrode side; moreover, the electrolyte solution containing the first additive not only can make the battery have both high-temperature cycling performance and high-temperature storage performance, but can also improve the safety performance of the battery.
Inventors:
WANG HAI (CN)
LI SULI (CN)
LI SULI (CN)
Application Number:
PCT/CN2023/122498
Publication Date:
April 18, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M10/0567; H01M10/0525; H01M10/0566
Attorney, Agent or Firm:
BEIJING BRIGHT IP AGENCY CO., LTD. (CN)
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