| abstract |
An object of the invention is to provide such a batterynthat has a high capacity, is excellent in storage characteristics,ncycle characteristics and continuous charging characteristics,nand is small in gas generation amount, whereby size reductionnand improvement in performance of a lithium secondary batteryncan be attained. n The present invention relates to a nonaqueous electrolyticnsolution comprising a lithium salt and a nonaqueous solventndissolving the same, wherein the electrolytic solution contains,nas the lithium salt, LiPF 6 in a concentration of from 0.2 ton2 mole/L, and LiBF 4 and/or a compound represented by the followingnformula (1) in a molar ratio of from 0.005 to 0.4 with respectnto LiPF 6 , and the nonaqueous solvent mainly comprises (1) ethylenencarbonate and/or propylene carbonate, (2-1) a symmetric linearncarbonate, (2-2) an asymmetric linear carbonate, and (3) vinylenencarbonate. |