Nonaqueous electrolyte and nonaqueous electrolyte battery
View Patent ↗A nonaqueous electrolyte has electrolyte salt dissolved in a nonaqueous solvent, wherein the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in all nonaqueous electrolyte solution components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1). (Here, at least one of R 1 and R 2 designates an alkyl group having the number of carbons of 4 or larger and at least one of them is a halogenated alkyl group). Thus, the decomposition of the halogenated solvent is suppressed.
1. A nonaqueous electrolyte having electrolyte salt dissolved in a nonaqueous solvent, wherein the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in nonaqueous solvent components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1);
(at least one of R 1 and R 2 designates an alkyl group having the number of carbons of 4 or larger and at least one of them is a halogenated alkyl group)
wherein the ratio of the halogenated solvent is 10 wt % or more and 20 wt % or less in the nonaqueous solvent components.
2. The nonaqueous electrolyte according to claim 1 , wherein the nonaqueous solvent having the ring structure is composed of at least one member selected from the group consisting of ethylene carbonate, propylene carbonate, and γ-butyrolactone or derivatives thereof.
3. The nonaqueous electrolyte according to claim 1 , wherein the nonaqueous electrolyte is gelled by a matrix polymer.
4. The nonaqueous electrolyte according to claim 3 , wherein the matrix polymer is composed of at least one member which is selected from the group consisting of polyethers, halogen-containing polymer compounds, polymer compounds including as a main component any of methacrylic acid or various esters thereof, polyacrylamide, polycarbonate, polysulfone and polyether sulfone or derivatives, copolymers and mixtures thereof.
5. A nonaqueous electrolyte having electrolyte salt dissolved in a nonaqueous solvent, wherein the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in nonagueous solvent components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1);
(at least one of R 1 and R 2 designates an alkyl group having the number of carbons of 4 or larger and at least one of them is a halogenated alkyl group)
wherein the nonaqueous solvent having the ring structure is composed of at least one member selected from the group consisting of ethylene carbonate, propylene carbonate, and γ-butyrolactone or derivatives thereof and further wherein the nonaqueous electrolyte is gelled by a matrix polymer.
6. The nonaqueous electrolyte according to claim 2 , wherein the matrix polymer is composed of at least one member which is selected from the group consisting of polyethers, halogen-containing polymer compounds, polymer compounds including as a main component any of methacrylic acid or various esters thereof, polyacrylamide, polycarbonate, polysulfone and polyether sulfone or derivatives, copolymers and mixtures thereof.
7. A nonaqueous electrolyte battery comprising: a cathode, an anode and a nonaqueous electrolyte, wherein the nonaqueous electrolyte has electrolyte salt dissolved in a nonaqueous solvent and the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in nonaqueous solvent components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1);
(at least one of R 1 and R 2 designates an alkyl group having the number of carbons of 4 or larger and at least one of them is a halogenated alkyl group)
wherein the ratio of the halogenated solvent is 10 wt % or more and 20 wt % or less in the nonaqueous solvent components.
8. The nonaqueous electrolyte battery according to claim 7 , wherein the nonaqueous solvent having the ring structure is composed of at least one member selected from the group consisting of ethylene carbonate, propylene carbonate, and γ-butyrolactone or derivatives thereof.
9. The nonaqueous electrolyte battery according to claim 7 , wherein the nonaqueous electrolyte is gelled by a matrix polymer.
10. The nonaqueous electrolyte battery according to claim 9 , wherein the matrix polymer is composed of at least one member which is selected from the group consisting of polyethers, halogen-containing polymer compounds, polymer compounds including as a main component any of methacrylic acid or various esters thereof, polyacrylamide, polycarbonate, polysulfone and polyether sulfone or derivatives, copolymers and mixtures thereof.
11. A nonaqueous electrolyte battery comprising: a cathode, an anode and a nonaqueous electrolyte, wherein the nonaqueous electrolyte has electrolyte salt dissolved in a nonaqueous solvent and the ratio of the nonaqueous solvent having a ring structure is 50 wt % or more in nonaqueous solvent components and the nonaqueous solvent includes at least one or more kinds of halogenated solvents expressed by a below-described general formula (1);
(at least one of R 1 and R 2 designates an alkyl group having the number of carbons of 4 or larger and at least one of them is a halogenated alkyl group)
wherein the nonaqueous solvent having the ring structure is composed of at least one member selected from the group consisting of ethylene carbonate, propylene carbonate, and γ-butyrolactone or derivatives thereof and further wherein the nonaqueous electrolyte is gelled by a matrix polymer.
12. The nonaqueous electrolyte according to claim 11 , wherein the matrix polymer is composed of at least one member which is selected from the group consisting of polyethers, halogen-containing polymer compounds, polymer compounds including as a main component any of methacrylic acid or various esters thereof, polyacrylamide, polycarbonate, polysulfone and polyether sulfone or derivatives, copolymers and mixtures thereof.