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Abstract

A class of halogensilane-functionalized carbonate electrolyte materials, a preparation method thereof and use in a lithium ion battery. The chemical structure is shown in formula 1, the compound containing a halogenosilane group and an organic carbonate group wherein the organic carbonate moiety contained in the molecular structure facilitates the dissociation and conduction of the lithium ions, and the organic silicon functional group can improve surface performance of the electrode and enhance interface performance of the material. The halogenosilane functionalized carbonate electrolyte materials can be used as a functional additive or a cosolvent for a lithium ion battery, and the electrolyte includes a lithium salt, a solvent with a high dielectric constant or an organic solvent with a low boiling point, and a compound with the chemical structure of formula 1. Such materials can also be used in other electrochemical energy storage devices.

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First Claim