LITHIUM-ION SECONDARY BATTERY

摘要

An objective of the present invention is to provide an electrolyte solution effective for reducing the amount of gas generated in a charge-discharge cycle of a lithium-ion secondary battery, preferably a lithium-ion secondary battery using a 5 V-class positive electrode. The present invention relates to a non-aqueous electrolyte solution comprising at least one type of aniline derivative represented by a predetermined formula, and a non-aqueous solvent, and to a lithium-ion secondary battery using the same.

主权项

1. A non-aqueous electrolyte solution comprising:
at least one aniline derivative represented by the following formula (1); and a non-aqueous solvent: wherein substituents R1 to R5 each independently represent a hydrogen atom, a halogen atom, alkyl group, vinyl group, alkoxy group, halogenated alkyl group, halogenated vinyl group, or halogenated alkoxy group, and the number of carbon atoms of each of the alkyl group, the alkoxy group, the halogenated alkyl group, and the halogenated alkoxy group is 1 or 2; and the total number of halogen atoms in formula (1) is 5 or less, and among the substituents R1 to R5, the number of the substituents other than a hydrogen atom and a halogen atom is 1 or 2.