LITHIUM SECONDARY BATTERY COMPRISING A NON-AQUEOUS ELECTROLYTIC SOLUTION, METHOD FOR PRODUCING THE SAME, AND MIXED NON-AQUEOUS ELECTROLYTIC SOLUTION

The present invention provides a non-aqueous electrolytic solution including an organosilicon compound having a metal atom, a phosphorus atom or a boron atom, and a fluorine-containing alkali metal salt, wherein the content of a fluorinated organosilicon compound generated by reaction of the organosilicon compound and the fluorine-containing alkali metal salt in the non-aqueous electrolytic solution is 0.2% by mass or less.