Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using same

A nonaqueous electrolytic solution, comprising:

• (A) a compound that does not have an aliphatic substituent having an unsaturated bond but has a Si—Si bond;
• and
• (B) at least one compound selected from the group consisting of a carbonate ester having an unsaturated bond, a compound represented by the following general formula (1), a compound having a S═O group, monofluorophosphate, difluorophosphate, fluorosulfonate, and an imide salt,
• wherein M represents a transition metal, an element of group 13, 14, or 15 of the periodic table, or a hydrocarbon group of 1 to 6 carbon atoms that may have a heteroatom, where when M represents a transition metal, or an element of group 13, 14, or 15 of the periodic table, Za+ is a metal ion, a proton, or an onium ion, a represents 1 to 3, b represents 1 to 3, 1 represents b/a, m represents 1 to 4, n represents 1 to 8, t represents 0 to 1, p represents 0 to 3, q represents 0 to 2, and r represents 0 to 2, and where when M is a hydrocarbon group of 1 to 6 carbon atoms that may have a heteroatom, Za+ does not exist, and a=b=1=n=0, m=1, t represents 0 to 1, p represents 0 to 3, q represents 0 to 2, and r represents 0 to 2,
• R1 represents a halogen atom, a hydrocarbon group of 1 to 20 carbon atoms that may have a heteroatom, or X3R4 where R1 that exists in number n may bind to one another to form a ring, R2 represents a direct bond, or a hydrocarbon group of 1 to 6 carbon atoms that may have a heteroatom, X1, X2, and X3 each independently represents O, S, or NR5, and R3, R4, and R5 each independently represent hydrogen, a hydrocarbon group of 1 to 10 carbon atoms that may have a heteroatom, where a plurality of R3 and R4 may bind to one another to form a ring, and Y1 and Y2 each independently represent C, S, or Si, wherein, when Y1 or Y2 is C or Si, q or r is 0 or 1, and, when Y1 or Y2 is S, q and r each are 2.