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US 8,945,780 B2Granted
Nonaqueous electrolyte and nonaqueous electrolyte battery
AssigneeSony Corporation
InventorsToru Odani, Tadahiko Kubota
Life of this patent
Estimating the term…
Abstract
A nonaqueous electrolyte includes: a nonaqueous solvent containing 0.1% by volume or more and not more than 50% by volume of at least one member selected from the group consisting of a halogen element-containing chain carbonate represented by the following formula (1) and a halogen element-containing cyclic carbonate represented by the following formula (2); and an electrolyte salt containing a compound represented by the following formula (3) in an amount of 0.001 moles/L or more and not more than 0.5 moles/L relative to the nonaqueous solvent
Claims9
A nonaqueous electrolyte comprising:
- a nonaqueous solvent consisting essentially of a cyclic carbonate selected from the group consisting of ethylene carbonate, propylene carbonate, and a mixture thereof, a chain carbonate, and 0.1% by volume or more and not more than 50% by volume of at least one member selected from the group consisting of a halogen element-containing chain carbonate represented by the following formula (1) and a halogen element-containing cyclic carbonate represented by the following formula (2), a mixing ratio of the cyclic carbonate to the chain carbonate in the solvent ranging from 5/95 to 45/55, the nonaqueous solvent being substantially free or lactone;
- and
- an electrolyte salt containing a compound represented by the following formula (3) in an amount of 0.001 moles/L or more and not more than 0.5 moles/L relative to the nonaqueous solvent
- wherein
- each of R1 to R6 represents a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R1 to R6 represents a halogen group or a halogenated alkyl group,
- wherein
- each of R7 to R10 represents, a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R7 to R10 represents a halogen group or a halogenated alkyl group, and
- M+[(ZY)2N]− (3)
- wherein
- M represents a monovalent cation;
- Y represents SO2 or CO;
- and each Z independently represents a fluorine atom or an organic group which may contain at least one polymerizable functional group and which may be perfluorinated, provided that at least one Z represents a fluorine atom.
9 more elements
A nonaqueous electrolyte battery comprising:
- a positive electrode,
- a negative electrode, and
- an nonaqueous electrolyte, wherein
- the nonaqueous electrolyte includes
- a nonaqueous solvent consisting essentially of a cyclic carbonate selected from the group consisting of ethylene carbonate, propylene carbonate, and a mixture thereof, a chain carbonate, and 0.1% by volume or more and not more than 50% by volume of at least one member selected from the group consisting of a halogen element-containing chain carbonate represented by the following formula (1) and a halogen element-containing cyclic carbonate represented by the following formula (2), a mixing ratio of the cyclic carbonate to the chain carbonate in the solvent ranging from 5/95 to 45/55, the nonaqueous solvent being substantially free or lactone;
- and
- an electrolyte salt containing a compound represented by the following formula (3) in an amount of 0.001 moles/L or more and not more than 0.5 moles/L relative to the nonaqueous solvent
- wherein
- each of R1 to R6 represents a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R1 to R6 represents a halogen group or a halogenated alkyl group,
- wherein
- each of R7 to R10 represents, a hydrogen group, a halogen group, an alkyl group or a halogenated alkyl group, provided that at least one of R7 to R10 represents a halogen group or a halogenated alkyl group, and
- M+[(ZY)2N]− (3)
- wherein
- M represents a monovalent cation;
- Y represents SO2 or CO;
- and each Z independently represents a fluorine atom or an organic group which may contain at least one polymerizable functional group and which may be perfluorinated, provided that at least one Z represents a fluorine atom.
13 more elements
Dependencies are inferred from the claim text.