Title:
NONAQUEOUS ELECTROLYTIC SOLUTION, NONVOLATILE ELECTROLYTE, AND SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/213268
Kind Code:
A1
Abstract:
The present invention provides a nonaqueous electrolytic solution and a nonvolatile electrolyte which improve the discharge capacity of a secondary battery, and a secondary battery using the same. The nonaqueous electrolytic solution comprises: a nonaqueous solvent containing an electrolyte salt, an ester-based solvent, and a carbonate-based solvent; and an additive for forming a film on a surface of a negative electrode. The donor number of the ester-based solvent is greater than the donor number of the carbonate-based solvent, and the molar ratio of the carbonate-based solvent to the ester-based solvent is 0 to 0.65.
Inventors:
UNEMOTO ATSUSHI (JP)
SEKI EIJI (JP)
SEKI EIJI (JP)
Application Number:
PCT/JP2020/008682
Publication Date:
October 22, 2020
Filing Date:
March 02, 2020
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H01M10/0569; H01M10/052; H01M10/0567; H01M10/0568
Foreign References:
| JP2015213016A | 2015-11-26 | |||
| JP2003257481A | 2003-09-12 | |||
| JP2014063753A | 2014-04-10 | |||
| JP2013152824A | 2013-08-08 | |||
| JP2017208215A | 2017-11-24 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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