US 11,695,157 B2
Lithium-ion battery and apparatus
Tiancheng Yi, Ningde (CN); Chunhua Hu, Ningde (CN); Shushi Dou, Ningde (CN); Yao Jiang, Ningde (CN); and Chengdu Liang, Ningde (CN)
Assigned to Contemporary Amperex Technology Co., Limited, Ningde (CN)
Filed by Contemporary Amperex Technology Co., Limited, Ningde (CN)
Filed on Jan. 25, 2022, as Appl. No. 17/583,240.
Application 17/583,240 is a division of application No. 17/056,805, granted, now 11,271,249, issued on Mar. 8, 2022, previously published as PCT/CN2019/125310, filed on Dec. 13, 2019.
Claims priority of application No. 201811535449.2 (CN), filed on Dec. 14, 2018.
Prior Publication US 2022/0149434 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01M 10/0567 (2010.01); C01G 51/00 (2006.01); C07D 239/04 (2006.01); C07D 241/04 (2006.01); C07D 251/04 (2006.01); C07D 295/145 (2006.01); C07D 403/04 (2006.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/42 (2006.01); H01M 10/0568 (2010.01); H01M 4/02 (2006.01)
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

OG Complex Work Unit Chemistry
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.