Title:
HIGH-VOLTAGE BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/074151
Kind Code:
A1
Abstract:
A high-voltage battery, comprising a positive electrode sheet, a negative electrode sheet, a separator and an electrolyte solution, wherein the positive electrode sheet comprises a positive current collector, a protective layer and a positive active material layer; the protective layer is disposed on at least one side surface of the positive current collector; the electrolyte solution comprises an organic solvent and a lithium salt, and the lithium salt comprises lithium bis(fluorosulfonyl)imide and/or lithium bis(trifluoromethylsulfonyl)imide. By coating the positive current collector with the protective layer having a certain thickness, the corrosion of lithium bis(fluorosulfonyl)imide and/or lithium bis(trifluoromethylsulfonyl)imide to the positive current collector can be avoided, such that the problem of a high-voltage battery having poor normal-temperature cycling performance, high-temperature cycling performance, high-temperature storage performance and interval cycling performance at 45ºC is solved.
Inventors:
ZENG CHANGAN (CN)
Application Number:
PCT/CN2023/123455
Publication Date:
April 11, 2024
Filing Date:
October 08, 2023
Export Citation:
Assignee:
ZHUHAI COSMX BATTERY CO LTD (CN)
International Classes:
H01M4/64; H01M10/0568
Attorney, Agent or Firm:
BEIJING BRIGHT IP AGENCY CO., LTD. (CN)
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