US 12,136,701 B2
Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising same
Haeun Kim, Daejeon (KR); Chul Haeng Lee, Daejeon (KR); and Jeongwoo Oh, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/283,669
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Nov. 8, 2022, PCT No. PCT/KR2022/017473
§ 371(c)(1), (2) Date Sep. 22, 2023,
PCT Pub. No. WO2023/085737, PCT Pub. Date May 19, 2023.
Claims priority of application No. 10-2021-0155283 (KR), filed on Nov. 12, 2021; and application No. 10-2022-0144880 (KR), filed on Nov. 3, 2022.
Prior Publication US 2024/0178447 A1, May 30, 2024
Int. Cl. H01M 10/0567 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01); H01M 4/02 (2006.01); H01M 10/0525 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2004/028 (2013.01); H01M 10/0525 (2013.01); H01M 2300/0034 (2013.01); H01M 2300/0037 (2013.01)] 14 Claims
 
1. A non-aqueous electrolyte solution for a lithium secondary battery, comprising a lithium salt, an organic solvent, and a phosphoric acid-based additive represented by Formula 1:

OG Complex Work Unit Chemistry
wherein, R is each independently selected from the group consisting of hydrogen, halogen, hydroxy, cyano, nitro, substituted or unsubstituted amino, substituted or unsubstituted mercapto, substituted or unsubstituted carbamoyl, substituted or unsubstituted C1-7 alkyl, substituted or unsubstituted C1-7 halogenated alkyl, substituted or unsubstituted C2-7 alkenyl, substituted or unsubstituted C2-7 alkynyl, substituted or unsubstituted C1-7 alkoxy, substituted or unsubstituted C1-4 alkoxy-C1-4 alkoxy, substituted or unsubstituted C6-10 aryl-C1-4 alkoxy, substituted or unsubstituted C2-7 alkenyloxy, substituted or unsubstituted C2-7 alkynyloxy, substituted or unsubstituted C3-7 cycloalkyl, substituted or unsubstituted C3-7 cycloalkenyl, substituted or unsubstituted 3-7 membered heterocycloalkyl, substituted or unsubstituted C3-7 cycloalkyloxy, substituted or unsubstituted C3-7 cycloalkenyloxy, substituted or unsubstituted 3-7 membered heterocycloalkyloxy, substituted or unsubstituted C6-10 aryl, substituted or unsubstituted 5-10 membered heteroaryl, substituted or unsubstituted C6-10 aryloxy, substituted or unsubstituted 5-10 membered heteroaryloxy, substituted or unsubstituted mono- or di-C1-4 alkylamino, substituted or unsubstituted mono-or di-C6-10 arylamino, substituted or unsubstituted C1-4 alkylcarbonylamino, substituted or unsubstituted C1-4 alkylcarbonyl, substituted or unsubstituted C1-4 alkoxycarbonyl, substituted or unsubstituted C2-4 alkenyloxycarbonyl, and substituted or unsubstituted C2-4 alkynyloxycarbonyl, and
the phosphoric acid-based additive is comprised in an amount of 0.01% by weight to 10% by weight based on a total weight of the non-aqueous electrolyte solution.