NONAQUEOUS BATTERY ELECTROLYTE AND SECONDARY BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To secure safety of a battery by using an additive having no adverse effect on battery characteristics, such as a low-temperature characteristic and storage characteristic, etc., even when it is added to an electrolyte, and effectively acting on overcharging. SOLUTION: A terphenyl derivative represented by the general formula is included in an electrolyte obtained by dissolving a lithium salt as a solute in an organic solvent. In the formula, X and Y respectively represent independent hydrogen or 1-4C alkyl.