Non-aqueous electrolyte solution and use thereof

摘要

The present invention provides a non-aqueous electrolyte solution that can be used as an electrolyte solution of a non-aqueous secondary battery to improve the discharge rate performance of the battery. The non-aqueous electrolyte solution comprises a non-aqueous solvent and a BF3-cyclic ether complex. The BF3-cyclic ether complex content is greater than zero part by mass, but less than 1 part by mass relative to 100 parts by mass of the total amount of other electrolyte solution components. Preferable examples of the BF3-cyclic ether complex include BF3-tetrahydropyran complex and BF3-dioxane complex.

主权项

1. A non-aqueous electrolyte solution for a non-aqueous secondary battery comprising:
a non-aqueous solvent; and a BF3-cyclic ether complex comprising at least one of BF3-tetrahydropyran complex and BF3-dioxane complexes; wherein the BF3-cyclic ether complex is contained in an amount of greater than zero part by mass, but less than 1 part by mass relative to 100 parts by mass of other electrolyte solution components.