| 摘要 |
PROBLEM TO BE SOLVED: To raise a high-efficiency discharging characteristic of a lithium secondary battery enough by raising the ion conductivity of the solvent of an electrolyte. SOLUTION: As the solvent of the electrolyte, the mixture of ethylene EC carbonate, dimethyl DMC carbonate, ethyl EA acetate, and diethyl DEC carbonate is used. The volume rate to solvent of ethylene EC carbonate is 20-60%, and the volume rate to solvent of the dimethyl DMC carbonate is 20-65%, and the volume rate to solvent of the mixed solution where ethyl EA acetate and the diethyl DEC carbonate are combined is 10-30%. |
