| abstract |
An electrolytic solution for use in nonaqueous electrolytic lithium secondary cells which contains a room temperature molten salt, i.e., an aliphatic quaternary ammonium salt of the formula (1), an organic solvent and a lithium salt of the formula (2), the electrolytic solution being characterized in that the organic solvent contains vinylene carbonate in an amount of 1 to 5 wt. % based on the electrolytic solution, and a lithium secondary cell using the electrolytic solution nLiX 2 (2) nwherein R 1 to R 3 are each a chain hydrocarbon having 1 to 4 carbon atoms, R 4 is methoxymethyl, ethoxymethyl, propoxymethyl or isopropoxymethyl, and X 1 and X 2 are each a fluorine-containing anion. |