US 12,119,448 B2
Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery including the same
Shul Kee Kim, Daejeon (KR); Young Min Lim, Daejeon (KR); and Ha Eun Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 17/423,163
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Jan. 16, 2020, PCT No. PCT/KR2020/000828
§ 371(c)(1), (2) Date Jul. 15, 2021,
PCT Pub. No. WO2020/149678, PCT Pub. Date Jul. 23, 2020.
Claims priority of application No. 10-2019-0006094 (KR), filed on Jan. 17, 2019; and application No. 10-2020-0005265 (KR), filed on Jan. 15, 2020.
Prior Publication US 2022/0131192 A1, Apr. 28, 2022
Int. Cl. H01M 10/0567 (2010.01); H01M 10/0525 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 10/0525 (2013.01); H01M 2300/0025 (2013.01)] 10 Claims
 
1. A non-aqueous electrolyte solution for a lithium secondary battery, the non-aqueous electrolyte solution comprising:
a lithium salt;
an organic solvent;
a first additive; and
a second additive,
wherein the first additive is a compound represented by Formula 1, and the second additive is a compound represented by Formula 2:

OG Complex Work Unit Chemistry
wherein, in Formula 1,
R1 and R2 are each independently a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms, and R3 is hydrogen or a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms,

OG Complex Work Unit Chemistry
wherein, in Formula 2,
A and A′ are each independently oxygen (O), sulfur(S), or nitrogen (N),
R4 is a substituted or unsubstituted alkylene group having 1 to 5 carbon atoms, and R5 to R7 are each independently hydrogen or an alkyl group having 1 to 4 carbon atoms,
wherein the organic solvent does not comprise propyl propionate.