NON-AQUEOUS ELECTROLYTE SOLUTION CONTAINING CYCLIC SULFONE COMPOUND, AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

A non-aqueous electrolyte solution containing a cyclic sulfone compound having a 1,3-dithietane-1,1,3,3-tetraoxide structure is provided. The cyclic sultone compound is preferably a compound represented by formula (I) [wherein in formula (I), R 1 to R 4 each represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, or the like].