Nonaqueous electrolyte solution and electrochemical element using same

A non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent,

• wherein the non-aqueous electrolytic solution further comprises a compound represented by general formula (I):
• wherein
• R1 represents
• a straight or branched alkyl group that has 1 to 6 carbon atoms and is optionally substituted by a halogen atom,
• a cycloalkyl group that has 3 to 7 carbon atoms and is optionally substituted by a halogen atom,
• a straight or branched alkenyl group that has 2 to 6 carbon atoms and is optionally substituted by a halogen atom,
• a straight or branched alkynyl group that has 2 to 6 carbon atoms and is optionally substituted by a halogen atom, or
• an aryl group that has 6 to 12 carbon atoms and is optionally substituted by a halogen atom;
• X represents a divalent linking group that has 1 to 6 carbon atoms and is optionally substituted by a halogen atom;
• and
• Y1 represents any of groups represented by general formulae (II) to (VI):
• wherein R2 and R3 each independently represent
• a straight or branched alkyl group that has 1 to 6 carbon atoms and is optionally substituted by a halogen atom,
• a cycloalkyl group that has 3 to 7 carbon atoms and is optionally substituted by a halogen atom,
• a straight or branched alkenyl group that has 2 to 6 carbon atoms and is optionally substituted by a halogen atom,
• a straight or branched alkynyl group that has 2 to 6 carbon atoms and is optionally substituted by a halogen atom, or an aryl group that has 6 to 12 carbon atoms and is optionally substituted by a halogen atom.