Invention Grant
US08304118B2 Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same 有权
用于锂二次电池的非水电解质溶液和包括其的锂二次电池

Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same
Abstract:
Disclosed is a non-aqueous electrolyte solution for a lithium secondary battery. The non-aqueous electrolyte solution includes an electrolyte salt and an organic solvent. The non-aqueous electrolyte solution further includes (a) a polyfunctional compound including two or more functional groups, at least one of which is an acryl group, and (b) an anion receptor selected from the group consisting of a borane compound, a borate compound and a mixture thereof. Further disclosed is a lithium secondary battery including the non-aqueous electrolyte solution. A stable solid electrolyte interface (SEI) film is formed on an anode of the lithium secondary battery. The amount of LiF in the SEI film is controlled, achieving improved cycle life characteristics of the battery.
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