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US 9,806,377 B2Granted
Secondary battery, electrolytic solution, battery pack, electronic device, and electrical vehicle
AssigneeSony Corporation
InventorsMasayuki Ihara, Yuko Hayakawa, Tadahiko Kubota
Life of this patent
Estimating the term…
Abstract
A secondary battery capable of improving cycle characteristics, conservation characteristics, and load characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. A separator provided between the cathode and the anode is impregnated with an electrolytic solution. The electrolytic solution includes one or more of a dicarbonic ester compound, a dicarboxylic compound, a disulfonic compound, a monofluoro lithium phosphate, and difluoro lithium phosphate and one or more of fluorinated lithium phosphate, fluorinated lithium borate, and imide lithium.
Claims8
A secondary battery comprising:
- a cathode;
- an anode;
- and
- an electrolytic solution, wherein
- the electrolytic solution includes a nonaqueous solvent, an electrolyte salt, one or more of compounds represented by formulas (1), (2), (4) and (5), and one or more of compounds represented by formula (6) and formula (7):
- where R1 and R3 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group;
- an alkyl group, an alkenyl group, or an alkynyl group partially substituted by an aromatic hydrocarbon group or an alicyclic hydrocarbon group;
- or a halogenated group thereof, and where R2 is a straight-chain or branched alkylene group, an arylene group, a divalent group including an arylene group and an alkylene group, a divalent group having carbon number from 2 to 12 both inclusive and including an ether bond (—O—) and an alkylene group, or a halogenated group thereof
- where R4 and R6 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group;
- an alkyl group, an alkenyl group, or an alkynyl group partially substituted by an aromatic hydrocarbon group or an alicyclic hydrocarbon group;
- or a halogenated group thereof, and where R5 is a straight-chain or branched alkylene group, an arylene group, a divalent group including an arylene group and an alkylene group, a divalent group having carbon number from 2 to 12 both inclusive and including an ether bond and an alkylene group, or a halogenated group thereof
- Li2PFO3 (formula 4)
- LiPF2O2 (formula 5)
- Li[PFmR106−m] (formula 6)
- where R10 is a perfluoroalkyl group or a perfluoroaryl group. m is one of integer numbers from 0 to 5 both inclusive
- Li[BFnR114−n] (formula 7)
- where R11 is a perfluoroalkyl group or a perfluoroaryl group, n is one of integer numbers from 0 to 3 both inclusive.
14 more elements
An electrolytic solution comprising:
- a nonaqueous solvent;
- an electrolyte salt;
- one or more of compounds represented by formulas (1), (2), (4) and (5);
- and
- one or more of compounds represented by formula (6) and formula(7), wherein
- the electrolytic solution is used for a second battery
- where R1 and R3 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group;
- an alkyl group, an alkenyl group, or an alkynyl group partially substituted by an aromatic hydrocarbon group or an alicyclic hydrocarbon group;
- or a halogenated group thereof, and where R2 is a straight-chain or branched alkylene group, an arylene group, a divalent group including an arylene group and an alkylene group, a divalent group having carbon number from 2 to 12 both inclusive and including an ether bond (—O—) and an alkylene group, or a halogenated group thereof
- where R4 and R6 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or a heterocyclic group;
- an alkyl group, an alkenyl group, or an alkynyl group partially substituted by an aromatic hydrocarbon group or an alicyclic hydrocarbon group;
- or a halogenated group thereof, and where R5 is a straight-chain or branched alkylene group, an arylene group, a divalent group including an arylene group and an alkylene group, a divalent group having carbon number from 2 to 12 both inclusive and including an ether bond and an alkylene group, or a halogenated group thereof
- Li2PFO3 (4)
- LiPF2O2 (5)
- Li[PFmR106−m] (6)
- where R10 is a perfluoroalkyl group or a perfluoroaryl group, m is one of integer numbers from 0 to 5 both inclusive;
- Li[BFnR114−n] (7)
- where R11 is a perfluoroalkyl group or a perfluoroaryl group, n is one of integer numbers from 0 to 3 both inclusive.
15 more elements
Dependencies are inferred from the claim text.