Title:
LITHIUM SALT COMPOUND, NONAQUEOUS ELECTROLYTE SOLUTION USING SAME, LITHIUM ION SECONDARY BATTERY AND LITHIUM ION CAPACITOR
Document Type and Number:
WIPO Patent Application WO/2016/189769
Kind Code:
A1
Abstract:
(1) A lithium salt compound which is composed of a difluorophosphate anion and a lithium cation that has one or more ether compounds selected from among 2, 5, 8, 11-tetraoxadodecane and 2, 5, 8, 11, 14-pentaoxapentadecane as a ligand; (2) a nonaqueous electrolyte solution which is obtained by dissolving an electrolyte salt in a nonaqueous solvent, and which contains the above-described lithium salt compound in the nonaqueous electrolyte solution; (3) a lithium ion secondary battery which is provided with a positive electrode, a negative electrode and the above-described nonaqueous electrolyte solution; (4) a lithium ion capacitor which uses the above-described nonaqueous electrolyte solution; and (5) a method for producing the above-described lithium salt compound, wherein the ether compound(s) and lithium difluorophosphate are brought into contact with each other. A nonaqueous electrolyte solution according to the present invention has excellent high-temperature cycle characteristics and excellent output characteristics after high-temperature cycles, and is capable of suppressing metal dissolution from the positive electrode and the like.
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Inventors:
CHIKA JUNICHI (JP)
Application Number:
PCT/JP2015/085697
Publication Date:
December 01, 2016
Filing Date:
December 21, 2015
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
C07C43/04; C07F9/06; H01G11/06; H01G11/62; H01M10/0525; H01M10/0568; H01M10/0569; C01B25/455; C07F1/02
Foreign References:
| JPH10291994A | 1998-11-04 | |||
| JP2008222484A | 2008-09-25 |
Other References:
SANG-DON HAN ET AL.: "Solvate Structures and Computational/Spectroscopic Characterization of LiPF6 Electrolytes", THE JOURNAL OF PHYSICAL CHEMISTRY C, vol. 119, no. 16, 27 March 2015 (2015-03-27), pages 8492 - 8500, XP055332028
See also references of EP 3305753A4
See also references of EP 3305753A4
Attorney, Agent or Firm:
KATAOKA, Makoto et al. (JP)
Makoto Kataoka (JP)
Makoto Kataoka (JP)
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