Nonaqueous electrolyte solution, and lithium ion secondary battery having the same

1. A nonaqueous electrolyte solution, comprising:

a lithium salt;

at least one oxo-acid ester derivative of phosphorus represented by formula (1) present in an amount of 20% by mass or more and 60% by mass or less;

at least one disulfonate ester represented by formula (4) present in an amount of 0.05% by mass or more and 10% by mass or less;

at least one aprotic solvent selected from cyclic carbonates and linear carbonates present in a remaining amount; and

0.5% by mass or more and 20% by mass or less of a cyclic carbonate ester containing a halogen:

in formula (1), R 11 , R 12 , and R 13 each independently represent any group selected from a halogen-substituted alkyl group, a halogen-substituted aryl group, a halogen-substituted alkenyl group, a halogen-substituted phenyl group, a halogen-substituted amino group, a halogen-substituted alkoxy group and a halogen-substituted cycloalkyl group; and any two or all of R 11 , R 12 , and R 13 may be bonded to form a cyclic structure, and

in formula (4), Q represents an oxygen atom, a methylene group or a single bond; A 1 represents a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms which may be branched, a carbonyl group, a sulfinyl group, a substituted or unsubstituted perfluoroalkylene group having 1 to 5 carbon atoms which may be branched, a substituted or unsubstituted fluoroalkylene group having 2 to 6 carbon atoms which may be branched, a substituted or unsubstituted alkylene group having 1 to 6 carbon atoms which contains an ether bond and may be branched, a substituted or unsubstituted perfluoroalkylene group having 1 to 6 carbon atoms which contains an ether bond and may be branched, or a substituted or unsubstituted fluoroalkylene group having 2 to 6 carbon atoms which contains an ether bond and may be branched; and A 2 represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted fluoroalkylene group, or an oxygen atom.

2. The nonaqueous electrolyte solution according to claim 1 , wherein the nonaqueous electrolyte solution is gelated with a polymer component or a polymer.

3. A lithium ion secondary battery, comprising a nonaqueous electrolyte solution according to claim 1 .

4. A capacitor, comprising a nonaqueous electrolyte solution according to claim 1 .

5. The nonaqueous electrolyte solution according to claim 1 , wherein the nonaqueous electrolyte solution is gelated with a polymer component or a polymer.

6. The nonaqueous electrolyte solution according to claim 1 , wherein the cyclic carbonate ester containing a halogen is a fluorine-containing carbonate.

7. The nonaqueous electrolyte solution according to claim 1 , wherein the aprotic solvent is selected from propylene carbonate, ethylene carbonate, vinylene carbonate, dimethyl carbonate, diethyl carbonate, and ethyl methyl carbonate.

8. A nonaqueous electrolyte solution, comprising:

a lithium salt;

at least one oxo-acid ester derivative of phosphorus selected from compounds represented by formulae (2) and (3) present in an amount of 20% by mass or more and 60% by mass or less;

at least one disulfonate ester represented by formula (4); and

0.5% by mass or more and 20% by mass or less of a cyclic carbonate ester containing a halogen:

in formula (2), R 21 and R 22 each independently represent any group selected from an alkyl group, an aryl group, an alkenyl group, a cyano group, a phenyl group, an amino group, a nitro group, an alkoxy group and a cycloalkyl group, and a halogen-substituted group thereof; R 21 and R 22 may be bonded to form a cyclic structure; and X 21 represents a halogen atom,

in formula (3), R 31 represents any group selected from an alkyl group, an aryl group, an alkenyl group, a cyano group, a phenyl group, an amino group, a nitro group, an alkoxy group and a cycloalkyl group, and a halogen-substituted group thereof; and X 31 and X 32 each independently represent a halogen atom,

in formula (4), Q represents an oxygen atom, a methylene group or a single bond; A 1 represents a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms which may be branched, a carbonyl group, a sulfinyl group, a substituted or unsubstituted perfluoroalkylene group having 1 to 5 carbon atoms which may be branched, a substituted or unsubstituted fluoroalkylene group having 2 to 6 carbon atoms which may be branched, a substituted or unsubstituted alkylene group having 1 to 6 carbon atoms which contains an ether bond and may be branched, a substituted or unsubstituted perfluoroalkylene group having 1 to 6 carbon atoms which contains an ether bond and may be branched, or a substituted or unsubstituted fluoroalkylene group having 2 to 6 carbon atoms which contains an ether bond and may be branched; and A 2 represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted fluoroalkylene group, or an oxygen atom.

9. The nonaqueous electrolyte solution according to claim 8 ,

comprising 0.05% by mass or more and 10% by mass or less of the disulfonate ester.

10. A lithium ion secondary battery, comprising a nonaqueous electrolyte solution according to claim 8 .

11. A capacitor, comprising a nonaqueous electrolyte solution according to claim 8 .

12. A nonaqueous electrolyte solution, comprising:

a lithium salt;

tri(trifluoroethyl) phosphate present in an amount of 20% by mass or more and 60% by mass or less;

at least one disulfonate ester represented by formula (4) in an amount of 0.05% by mass or more and 10% by mass or less; and

at least one aprotic solvent selected from cyclic carbonates and linear carbonates in a remaining amount:

in the formula (4), Q represents an oxygen atom, a methylene group or a single bond; A 1 represents a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms which may be branched, a carbonyl group, a sulfinyl group, a substituted or unsubstituted perfluoroalkylene group having 1 to 5 carbon atoms which may be branched, a substituted or unsubstituted fluoroalkylene group having 2 to 6 carbon atoms which may be branched, a substituted or unsubstituted alkylene group having 1 to 6 carbon atoms which contains an ether bond and may be branched, a substituted or unsubstituted perfluoroalkylene group having 1 to 6 carbon atoms which contains an ether bond and may be branched, or a substituted or unsubstituted fluoroalkylene group having 2 to 6 carbon atoms which contains an ether bond and may be branched; and A 2 represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted fluoroalkylene group, or an oxygen atom.