| 摘要 |
Disclosed are (1) a nonaqueous electrolytic solution for lithium battery comprising an electrolyte dissolved in a nonaqueous solvent, which contains at least one hydroxy acid derivative compound represented by the formulae (I) and (II) in an amount of from 0.01 to 10% by mass of the nonaqueous electrolytic solution, and which can improve the low-temperature and high-temperature cycle property thereof (wherein R 1 represents an alkyl group having from 1 to 6 carbon atoms, an alkenyl group having from 2 to 6 carbon atoms, or an alkynyl group having from 3 to 6 carbon atoms, R 2 represents a sulfonyl group or a formyl group, R 3 and R 4 each represent a hydrogen atom or a methyl group); (2) a lithium battery comprising a positive electrode, a negative electrode and a nonaqueous electrolytic solution of an electrolyte salt dissolved in a nonaqueous solvent, wherein the nonaqueous electrolytic solution contains at least one hydroxy acid derivative compound represented by the above formulae (I) and (II) in an amount of from 0.01 to 10 % by mass of the nonaqueous electrolytic solution; and (3) a hydroxy acid derivative compound represented by the following formula (III) or (IV) (wherein R 6 represents an alkenyl group having from 2 to 6 carbon atoms, or an alkynyl group having from 3 to 6 carbon atoms, R 7 represents a sulfonyl group or a formyl group, and R 8 and R 9 each represent a hydrogen atom or a methyl group). |
