Patent ID: 11949073
Assignee: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 11:
12. An apparatus, comprising a lithium-ion battery, wherein the lithium-ion battery is used as a power supply to the apparatus and comprises a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolytic solution, and 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, the carbonate solvent is a mixture of a cyclic carbonate and a chain carbonate, and the high-oxidation-potential solvent is selected from one or more of compounds denoted by Formula I and Formula II:, 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 4 to 6 carbon atoms;
a halogen atom thereof is selected from the group consisting of F, Cl, Br, and I;
the chain carbonate is selected from the group consisting of an ethyl methyl carbonate, a methyl propyl carbonate, a methyl isopropyl carbonate, a methyl butyl carbonate, an ethylene propyl carbonate, a dimethyl carbonate, a diethyl carbonate, a dipropyl carbonate, a dibutyl carbonate, or any combinations thereof;
the cyclic carbonate is selected from the group consisting of an ethylene carbonate, a propylene carbonate, or a combination thereof;
based on a total weight of the nonaqueous solvent, a weight percent content of the cyclic carbonate is 2-10%, a weight percent content of the linear carbonate is 35-65%, and a weight percent content of the high-oxidation-potential solvent is 10%-60%.