| abstract |
PROBLEM TO BE SOLVED: To provide a lithium secondary battery having excellent discharge characteristics after continuous charging, a large remaining capacity, and a small gas generation amount. SOLUTION: A non-aqueous electrolytic solution mainly composed of a lithium salt and a non-aqueous solvent for dissolving the lithium salt, wherein LiPF 6 is 0.2-2 mol / liter and LiBF 4 is 0.001-0 as a lithium salt. The non-aqueous solvent contains (1) ethylene carbonate and / or propylene carbonate, (2) chain carbonate, and (3) vinylene carbonate as a main component. A non-aqueous electrolyte characterized by that. [Selection figure] None |