ACETONITRILE ELECTROLYTE CONTAINING HIGH CONCENTRATION METAL SALT AND SECONDARY BATTERY CONTAINING THE ELECTROLYTE

摘要

PROBLEM TO BE SOLVED: To provide a new electrolyte system for a lithium secondary battery exerting rate characteristics higher than the conventional carbonate-based electrolytes by meeting a request for developing a lithium ion battery having high rate characteristics, capable of discharging in a speed higher than the current ones.SOLUTION: In the electrolyte for a lithium secondary battery containing acetonitrile and LiN(SOF), vol.mol concentration of the LiN(SOF)is equal to or greater than 3.0 mol/L.