Title:
LITHIUM SECONDARY BATTERY WITH IMPROVED HIGH TEMPERATURE CHARACTERISTICS
Document Type and Number:
WIPO Patent Application WO/2020/009436
Kind Code:
A1
Abstract:
The present invention relates to a nonaqueous electrolyte solution for a lithium secondary battery, and a lithium secondary battery comprising same and, more particularly, to a nonaqueous electrolyte solution for a lithium secondary battery comprising an organic solvent, LiPF6 as a first lithium salt, a second lithium salt other than LIPF6, an oligomer represented by formula 1 as a first additive, and a mixed additive of lithium difluorophosphate (LiDFP), fluorobenzene (FB) and tetravinylsilane (TVS) as a second additive, and a lithium secondary battery comprising same.
Inventors:
KIM GWANG YEON (KR)
LEE CHUL HAENG (KR)
AHN KYOUNG HO (KR)
OH JEONG WOO (KR)
LEE CHUL HAENG (KR)
AHN KYOUNG HO (KR)
OH JEONG WOO (KR)
Application Number:
PCT/KR2019/008065
Publication Date:
January 09, 2020
Filing Date:
July 02, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/0567; H01M4/36; H01M4/485; H01M4/505; H01M4/525; H01M4/587; H01M10/052; H01M10/0568; H01M10/0569
Foreign References:
| KR20180054499A | 2018-05-24 | |||
| KR20180026358A | 2018-03-12 | |||
| KR20180032692A | 2018-03-30 | |||
| KR20170068595A | 2017-06-19 | |||
| KR20160030765A | 2016-03-21 |
Other References:
WONG, D. H. C. ET AL.: "Nonflammable perfluoropolyether-based electrolytes for lithium batteries", PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, vol. 111, no. 9, 2014, pages 3327 - 3331, XP002733340, DOI: 10.1073/pnas.1314615111
See also references of EP 3713004A4
See also references of EP 3713004A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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