US 12,283,663 B2
Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same
Sol Ji Park, Daejeon (KR); Jung Hoon Lee, Daejeon (KR); Chul Haeng Lee, Daejeon (KR); Yoo Sun Kang, Daejeon (KR); and Jae Won Lee, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/281,485
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Sep. 14, 2022, PCT No. PCT/KR2022/013726
§ 371(c)(1), (2) Date Sep. 11, 2023,
PCT Pub. No. WO2023/043190, PCT Pub. Date Mar. 23, 2023.
Claims priority of application No. 10-2021-0122326 (KR), filed on Sep. 14, 2021.
Prior Publication US 2024/0047748 A1, Feb. 8, 2024
Int. Cl. H01M 10/0525 (2010.01); C07F 9/54 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0567 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 4/02 (2006.01)
CPC H01M 10/0567 (2013.01) [C07F 9/5428 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0037 (2013.01)] 14 Claims
 
1. A non-aqueous electrolyte solution for a lithium secondary battery, the non-aqueous electrolyte solution comprising a lithium salt; an organic solvent; and a compound represented by Formula 1:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
R1 to R3 are each independently an alkyl group having 1 to 6 carbon atoms and optionally substituted with a fluorine, an alkenyl group having 2 to 6 carbon atoms and optionally substituted with a fluorine, an alkynyl group having 2 to 6 carbon atoms and optionally substituted with a fluorine, or —R′OSi(R4)3;
R′ is a direct linkage; an alkylene group having 1 to 6 carbon atoms and optionally substituted with a fluorine, an alkenylene group having 2 to 6 carbon atoms and optionally substituted with a fluorine, or an alkynylene group having 2 to 6 carbon atoms and optionally substituted with a fluorine;
R4 is an alkyl group having 1 to 6 carbon atoms;
L1 is —(CO)mO(CH2)n−;
m is 0 or 1;
n is an integer of 0 to 5; and
A− is (CF3SO2)2N−, (FSO2)2N−, PF6−, PO2F2−, BF4−, ClO4−, (C2O4)BF2−, HSO4−, CF3SO3−, (C2F5SO2)2N−, C(CF2SO2)3−, AsF6−, SbF6−, AlCl4−, NbF6−, or CF3CO2−.
wherein the compound represented by Formula 1 is included in an amount of 0.05 wt % to 5 wt % with respect to a total weight of the non-aqueous electrolyte solution.