Nonaqueous Electrolytic Solution and Nonaqueous Secondary Battery

A nonaqueous electrolyte solution comprising a nonaqueous solvent, a lithium salt, and at least one compound selected from the group consisting of compounds represented by the following general formula (1):

• R1—(S)n—R2 (1)
• wherein R1 and R2 represent an alkyl group which may be substituted with an aryl group or an alkoxysilyl group, or an aryl group which may be substituted with an alkyl group or an alkoxysilyl group, and n is an integer of 1 to 4;
• the following general formula (2):
• X—Si(OR3)(3-m)R4m (2)
• wherein R3 and R4 represent an alkyl group which may be substituted with an aryl group or an alkoxysilyl group or a halogen atom, or an aryl group which may be substituted with an alkyl group or an alkoxysilyl group or a halogen atom, and X represents at least one selected from the group consisting of groups represented by the following formula (5):
• wherein k is an integer of 0 to 8 and * represents a binding site to Si, the following formula (6):
• wherein j is an integer of 0 to 8 and * represents a binding site to Si, the following formula (7):
• wherein h is an integer of 0 to 8, g is an integer of 0 or 1, and * represents a binding site to Si, and the following formula (17):
• wherein * represents a binding site to Si, and m is an integer of 0 to 2;
• the following general formula (3):
• wherein X each independently represents at least one selected from groups represented by the formulas (5) to (7) and (17) and d is an integer of 0 to 10,000;
• the following general formula (4):
• wherein R5 each independently represents an alkyl group which may be substituted with an aryl group or a halogen atom, or an aryl group may be substituted with an alkyl group or a halogen atom, y is an integer of 2 to 8, and X represents at least one selected from groups represented by the formulas (5) to (7) and (17);
• and
• the following general formula (18):
• X—Si(OR3′OR3)(3-m)R4m (18)
• wherein R3, R4, X and m are as defined in the general formula (2), and R3′ is an alkylene group which may be substituted with an aryl group, an alkoxysilyl group or a halogen atom.