Electrolyte solution for non-aqueous electrolyte battery, and non-aqueous electrolyte battery using the same

• US 10,553,904 B2
• Filed: 02/18/2016
• Issued: 02/04/2020
• Est. Priority Date: 02/19/2015
• Status: Active Grant

• Current Assignee: Central Glass Company Limited
• Original Assignee: Central Glass Company Limited
• Inventors: Kubo, Makoto, Morinaka, Takayoshi, Takahashi, Mikihiro, Shinmen, Masutaka, Kawabata, Wataru, Matsuzaki, Hiroki
• Primary Examiner(s): Walke, Amanda C.
• Application Number:
  US15/549,210
• Publication Number:
  US 20180034103A1
• Time in Patent Office: 1,447 Days
• Field of Search: 4292311
• CPC Class Codes: C07C 307/02 Monoamides of sulfuric acids or esters thereof, e.g. sulfamic acids
• CPC Class Codes: C07C 317/24 having sulfone or sulfoxide groups and doubly-bound oxygen atoms bound to the same carbon skeleton
• CPC Class Codes: C07F 7/0805 comprising only Si, C or H atoms
• CPC Class Codes: C07F 7/12 Organo silicon halides
• CPC Class Codes: C07F 9/02 Phosphorus compounds sugar phosphates C07H11/04; nucleotides C07H19/00, C07H21/00; nucleic acids C07H21/00
• CPC Class Codes: C07F 9/26 containing P-halide groups
• CPC Class Codes: C07F 9/28 with one or more P—C bonds
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/054 Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
• CPC Class Codes: H01M 10/0567 characterised by the additives
• CPC Class Codes: H01M 10/0568 characterised by the solutes
• CPC Class Codes: H01M 10/0569 characterised by the solvents
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 2300/0025 Organic electrolyte
• CPC Class Codes: H01M 2300/0028 characterised by the solvent
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

The present invention provides an electrolyte solution for a non-aqueous electrolyte battery capable of an exerting high average discharge voltage and an excellent low-temperature output characteristic at −30° C. or lower and an excellent cycle characteristic and an excellent storage characteristic at high temperatures of 50° C. or higher, as well as a non-aqueous electrolyte battery containing the same. The present electrolyte solution comprises a non-aqueous solvent, a solute, at least one silane compound represented by the following general formula (1) as a first compound, and a fluorine-containing compound represented by the following general formula (3), for example, as a second compound.

Claims

1. An electrolyte solution for a non-aqueous electrolyte battery, comprising at least a non-aqueous solvent, a solute, at least one silane compound represented by the following formula (1) as a first compound, and at least one compound selected from the group consisting of fluorine-containing compounds represented by the following formulae (4) to (9) as a second compound:

2. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein the amount of said first compound to be added ranges from 0.001 to 10.0% by mass relative to the total amount of the electrolyte solution for a non-aqueous electrolyte battery.

3. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein the amount of said second compound ranges from 0.001 to 10.0% by mass relative to the total amount of the electrolyte solution for a non-aqueous electrolyte battery.

4. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein the group represented by R¹ in said formula (1) each independently represents a group selected from the group consisting of a vinyl group, an allyl group, a 1-propenyl group, a 2-propenyl group, an ethynyl group and a 2-propynyl group.

5. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein the group represented by R² in said formula (1) each independently represents a group selected from the group consisting of a methyl group, an ethyl group, a propyl group, a 2,2,2-trifluoroethyl group, a 2,2,3,3-tetrafluoropropyl group, a 1,1,1-trifluoroisopropyl group and a 1,1,1,3,3,3-hexafluoroisopropyl group.

6. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein R³ to R⁵ in said formulae (4) and (6) to (8) represent a fluorine atom or an organic group selected from the group consisting of a fluorine-atom-containing linear or branched C_1-10 alkoxy group, a C_2-10 alkenyloxy group and a C_2-10 alkynyloxy group.

7. The electrolyte solution for a non-aqueous electrolyte battery according to claim 6, wherein said alkoxy group is selected from the group consisting of a 2,2,2-trifluoroethoxy group, a 2,2,3,3-tetrafluoropropoxy group, a 1,1,1-trifluoroisopropoxy group and a 1,1,1,3,3,3-hexafluoroisopropoxy group;

said alkenyloxy group is selected from the group consisting of a 1-propenyloxy group, a 2-propenyloxy group and a 3-butenyloxy group; and

said alkynyloxy group is selected from the group consisting of a 2-propynyloxy group and a 1,1-dimethyl-2-propynyloxy group.

8. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein X¹ and X² in said formulae (4), (5), (8) and (9) are a fluorine atom or an organic group selected from the group consisting of a linear or branched C_1-10 alkoxy group, a C_2-10 alkenyloxy group, and a C_2-10 alkynyloxy group.

9. The electrolyte solution for a non-aqueous electrolyte battery according to claim 8, wherein said alkoxy group is selected from the group consisting of a methoxy group, an ethoxy group and a propoxy group;

said alkenyloxy group is selected from the group consisting of a 1-propenyloxy group, a 2-propenyloxy group and a 3-butenyloxy group; and

said alkynyloxy group is selected from the group consisting of a 2-propynyloxy group and a 1,1-dimethyl-2-propynyloxy group.

10. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein M¹ and M² in said formulae (4) to (9) represent at least one cation selected from the group consisting of a lithium ion, a sodium ion, a potassium ion, a tetraalkylammonium ion and a tetraalkylphosphonium ion.

11. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein said solute is at least one solute selected from the group consisting of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium bis(trifluoromethanesulfonyl)imide, lithium bis(fluorosulfonyl)imide, lithium bis(difluorophosphoryl)imide, sodium hexafluorophosphate, sodium tetrafluoroborate, sodium bis(trifluoromethanesulfonyl)imide, sodium bis(fluorosulfonyl)imide and sodium bis(difluorophosphoryl)imide.

12. The electrolyte solution for a non-aqueous electrolyte battery according to claim 1, wherein said non-aqueous solvent is at least one non-aqueous solvent selected from the group consisting of a cyclic carbonate, a linear carbonate, a cyclic ester, a linear ester, a cyclic ether, a linear ether, a sulfone compound, a sulfoxide compound and an ionic liquid.

13. A non-aqueous electrolyte battery, comprising at least a positive electrode, a negative electrode, a separator, and the electrolyte solution for a non-aqueous electrolyte battery according to claim 1.