Title:
LITHIUM-SULFUR SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2021/085887
Kind Code:
A1
Abstract:
The present invention relates to a lithium-sulfur secondary battery comprising a positive electrode, a negative electrode, a separator and an electrolyte, wherein the electrolyte comprises a lithium salt and a solvent, the solvent comprising a nitrile-based solvent, a fluorinated ether-based solvent and a disulfide-based solvent in a specific ratio by volume, and thus, for the positive electrode which satisfies the specific conditions of high loading and low porosity, the first cycle discharge capacity and average discharge voltage of the lithium-sulfur secondary battery comprising the electrolyte may be improved.
Inventors:
CHUNG HABIN (KR)
SOHN KWONNAM (KR)
PARK CHANGHUN (KR)
KIM MINSU (KR)
SOHN KWONNAM (KR)
PARK CHANGHUN (KR)
KIM MINSU (KR)
Application Number:
PCT/KR2020/013759
Publication Date:
May 06, 2021
Filing Date:
October 08, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
H01M10/0569; H01M4/02; H01M4/38; H01M10/052; H01M10/42
Foreign References:
| KR20160136686A | 2016-11-30 | |||
| KR20160074377A | 2016-06-28 | |||
| JP2015534254A | 2015-11-26 | |||
| KR20190063061A | 2019-06-07 | |||
| KR20190134367A | 2019-12-04 |
Other References:
KAMPHAUS ETHAN P., BALBUENA PERLA B.: "Effects of Dimethyl Disulfide Cosolvent on Li–S Battery Chemistry and Performance", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 31, no. 7, 9 April 2019 (2019-04-09), US, pages 2377 - 2389, XP055808283, ISSN: 0897-4756, DOI: 10.1021/acs.chemmater.8b04821
ABBAS FOTOUHI ET AL.: "Lithium-Sulfur Battery Technology Readiness and Applications-A Review", ENERGIES, vol. 10, 2017, pages 1937
See also references of EP 3951992A4
ABBAS FOTOUHI ET AL.: "Lithium-Sulfur Battery Technology Readiness and Applications-A Review", ENERGIES, vol. 10, 2017, pages 1937
See also references of EP 3951992A4
Attorney, Agent or Firm:
KIM, Sung Ho (KR)
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