CPC H01M 10/0567 (2013.01) [C01G 51/006 (2013.01); C01G 51/42 (2013.01); C07D 239/04 (2013.01); C07D 241/04 (2013.01); C07D 251/04 (2013.01); C07D 295/145 (2013.01); C07D 403/04 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 10/4235 (2013.01); C01P 2002/52 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01); H01M 2300/0025 (2013.01)] | 17 Claims |
1. A lithium-ion battery, comprising an electrode assembly and an electrolyte, wherein the electrode assembly comprises a positive electrode plate, a negative electrode plate, and a separator, wherein
a positive active material of the positive electrode plate comprises Lix1Coy1M1-y1O2-z1Qz1, where 0.5≤x1≤1.2, 0.8≤y1≤1.0, 0≤z1≤0.1, M is one or more selected from the group consisting of Al, Ti, Zr, Y, and Mg, and Q is one or more selected from the group consisting of F, Cl, and S;
the electrolyte contains an additive A represented by Formula I-2 in an amount of 0.1%-10% by mass based on the total mass of the electrolyte; and
in the Formula 1-2, R1, R2, R3, and R4 each are independently selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C3 linear or branched alkyl group, a substituted or unsubstituted C5-C7 cyclic alkyl group, a substituted or unsubstituted C1-C3 alkoxy group, a substituted or unsubstituted C1-C3 amine group, a substituted or unsubstituted C2-C3 alkenyl group, a substituted or unsubstituted C2-C3 alkynyl group, a substituted or unsubstituted C6-C8 aryl group, and a substituted or unsubstituted C2-C7 heterocyclic group, wherein a substituent group is one or more selected from the group consisting of halogen atoms; x and y each are independently selected from 0, 1, or 2; and m and n each are independently selected from 1 or 2.
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