NONAQUEOUS ELECTROLYTE SOLUTION FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY USING THE SAME
申请人:Ube Industries, Ltd.
公开号:EP2138481A1
公开(公告)日:2009-12-30
The present invention provides (1) a sulfone compounds having a propargyl group, (2) a nonaqueous electrolytic solution for lithium secondary batteries, which comprises an electrolyte salt dissolved in a nonaqueous solvent and contains a sulfone compound having a specific structure that has an SO2 group with a propargyl group or a vinyl group bonding thereto, in an amount of from 0.01 to 10 % by weight of the nonaqueous electrolytic solution, and which can prevent gas generation and is excellent in battery characteristics such as cycle property and the like, and (3) a lithium secondary 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 a sulfone compound having a specific structure, in an amount of from 0.01 to 10 % by weight of the nonaqueous electrolytic solution.
本发明提供了(1)一种具有丙炔基的砜化合物;(2)一种用于锂二次电池的非水性电解溶液,它包括溶解在非水性溶剂中的电解质盐,并含有一种具有特定结构的砜化合物,该化合物具有一个带有丙炔基或乙烯基的SO2基团,其用量为0.(3) 锂二次电池,包括正极、负极和溶解在非水溶剂中的电解质盐的非水电解溶液,其中非水电解溶液含有具有特定结构的砜化合物,其用量为非水电解溶液重量的 0.01至10%(按非水电解溶液重量计)。