US 12,218,308 B2
Additive, electrolyte for rechargeable lithium battery and rechargeable lithium battery
Wonseok Cho, Yongin-si (KR); Dahyun Kim, Yongin-si (KR); Minseo Kim, Yongin-si (KR); Sanghyung Kim, Yongin-si (KR); Sanghoon Kim, Yongin-si (KR); Sangwoo Park, Yongin-si (KR); Hyejin Park, Yongin-si (KR); Myungheui Woo, Yongin-si (KR); Bokyung Ryu, Yongin-si (KR); Tae Jin Lee, Yongin-si (KR); Olga Tsay, Yongin-si (KR); and Pavel Shatunov, Yongin-si (KR)
Assigned to SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed by SAMSUNG SDI CO., LTD., Yongin-si (KR)
Filed on Aug. 9, 2021, as Appl. No. 17/397,033.
Claims priority of application No. 10-2020-0107152 (KR), filed on Aug. 25, 2020.
Prior Publication US 2022/0069350 A1, Mar. 3, 2022
Int. Cl. H01M 10/0567 (2010.01); H01M 4/02 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0025 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electrolyte for a rechargeable lithium battery, the electrolyte comprising:
a non-aqueous organic solvent,
a lithium salt, and
an additive represented by Chemical Formula 1 or Chemical Formula 2:

OG Complex Work Unit Chemistry
wherein, in Chemical Formula 1 and Chemical Formula 2,
R1 to R8 are each independently an unsubstituted C1 to C10 alkyl group, an unsubstituted C2 to C10 alkenyl group, an unsubstituted C3 to C10 cycloalkyl group, an unsubstituted C3 to C10 cycloalkenyl group, an unsubstituted C2 to C10 alkynyl group, an unsubstituted C3 to C10 cycloalkynyl group, or an unsubstituted C6 to C20 aryl group,
R1 to R8 are separately present, or at least one pair of R1 and R2; R3 and R4; R5 and R6; and R7 and R8 are linked to each other to provide an unsubstituted monocyclic aliphatic heterocycle, an unsubstituted polycyclic aliphatic heterocycle, an unsubstituted monocyclic aromatic heterocycle, or an unsubstituted polycyclic aromatic heterocycle, and
L1 to L4 are each independently an unsubstituted C1 to C20 alkylene group.