HALOGENOSILANE-FUNCTIONALIZED CARBONATE ELECTROLYTE MATERIAL, PREPARATION METHOD THEREOF AND USE IN LITHIUM ION BATTERY ELECTROLYTE

摘要

The present invention provides a class of halogenosilane-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 of formula (1) contains 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 of the present invention can be used as a functional additive or a co-solvent 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 a chemical structure as shown in formula (1). Such materials can also be used in other electrochemical energy storage devices.