Title:
LITHIUM SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/072043
Kind Code:
A1
Abstract:
The present invention pertains to a lithium secondary battery comprising: a positive electrode containing lithium nickel cobalt manganese-based oxide as a positive electrode active material; a negative electrode containing a negative electrode active material made of Si; and a non-aqueous electrolyte containing lithium salt, an organic solvent, and additives, wherein the organic solvent includes a compound of formula 1 and fluoroethylene carbonate, and the compound of formula 1 constitutes more than 15 wt% of the total non-aqueous electrolyte. [Formula 1] In formula 1, A is a C2 or C3 cyclic phosphite, R is a C1-5 alkylene group, and X is a C1-5 perfluoroalkyl group.
Inventors:
CHO YOON GYO (KR)
LEE JUNG MIN (KR)
LEE CHUL HAENG (KR)
LEE JUNG MIN (KR)
LEE CHUL HAENG (KR)
Application Number:
PCT/KR2023/014913
Publication Date:
April 04, 2024
Filing Date:
September 26, 2023
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
H01M10/0569; H01M4/38; H01M4/505; H01M4/525; H01M10/052; H01M10/0567; H01M10/0568
Foreign References:
| KR100803193B1 | 2008-02-14 | |||
| US20200144672A1 | 2020-05-07 | |||
| JP2011108454A | 2011-06-02 | |||
| US20210273263A1 | 2021-09-02 | |||
| CN108365265A | 2018-08-03 |
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
Download PDF: