US 12,482,863 B2
Nonaqueous electrolytic solution, lithium-ion battery, battery module, battery pack, and apparatus
Chenghua Fu, Ningde (CN); Peipei Chen, Ningde (CN); Junmin Feng, Ningde (CN); and Chengdu Liang, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (HK)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Dec. 22, 2020, as Appl. No. 17/130,713.
Application 17/130,713 is a continuation of application No. PCT/CN2019/108604, filed on Sep. 27, 2019.
Claims priority of application No. 201811140357.4 (CN), filed on Sep. 28, 2018.
Prior Publication US 2021/0111434 A1, Apr. 15, 2021
Int. Cl. H01M 10/0569 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/0567 (2010.01)
CPC H01M 10/0569 (2013.01) [H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0567 (2013.01); H01M 2220/20 (2013.01); H01M 2300/0037 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A lithium-ion battery, comprising a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution comprises a nonaqueous solvent and a lithium salt; and
the nonaqueous solvent comprises a carbonate solvent and a high-oxidation-potential solvent and is free from a non-halogenated cyclic alkylene carbonate, and the high-oxidation-potential solvent comprises at least one compound denoted by Formula I and at least one compound denoted by Formula II:

OG Complex Work Unit Chemistry
in Formula I, R1 and R2 are separately selected from unsubstituted, partially halogenated, or fully halogenated alkyls that comprise 1 to 5 carbon atoms, and at least one of R1 or R2 is a partially halogenated or fully halogenated alkyl that comprises 1 to 5 carbon atoms;
in Formula II, R3 is selected from partially halogenated or fully halogenated alkylidenes that comprise 1 to 6 carbon atoms; and
a halogen atom thereof is selected from one or more of F, Cl, Br, or I,
the compound denoted by Formula I is selected from the group consisting of:

OG Complex Work Unit Chemistry
and any combinations thereof, the compound denoted by Formula II is selected from the group consisting of:

OG Complex Work Unit Chemistry
and any combinations thereof,
wherein, based on a total weight of the nonaqueous solvent, the high-oxidation-potential solvent is 40%-60%, the linear chain carbonate is 40%-60%,
based on a total weight of the high-oxidation-potential solvent, the at least one compound denoted by Formula I is 60%-70%, and the at least one compound denoted by Formula II is 30%-40%,
wherein the nonaqueous electrolytic solution further comprises a film-forming additive; and,
wherein the film-forming additive comprises a fluoroethylene carbonate.