A non-aqueous electrolyte additive, a preparation method and application thereof

By using a boron sulfonyl imide lithium salt additive to form a stable passivation film in lithium-ion batteries, the problem of corrosion of aluminum current collectors by existing additives is solved, and the cycle and high-temperature performance of the battery is improved.

CN116565310BActive Publication Date: 2026-07-24SHENZHEN YANYI NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN YANYI NEW MATERIALS CO LTD
Filing Date
2022-01-29
Publication Date
2026-07-24

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Abstract

The application provides a nonaqueous electrolyte additive, a preparation method and application thereof, and the nonaqueous electrolyte additive is a lithium salt sulfimide additive containing boron, contains partial structures of LiFSI and LiBOB, can effectively improve ion conductivity, film forming performance, cycle performance and high-temperature storage performance of a battery, and can avoid corrosion of sulfimide to a current collector.
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Citation Information

Patent Citations

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    CN107706454A

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    CN103794819A

  • Lithium ion battery electrolyte, and lithium ion battery containing electrolyte

    WO2020052118A1