Publication number: 20210203000
Abstract: This application provides a lithium-ion battery, a battery module, a battery pack, and an apparatus. The lithium-ion battery includes a positive electrode plate, a negative electrode plate, a separator, and a nonaqueous electrolyte. The positive electrode plate includes Li1+xNiaCobMe(1-a-b)O2-cYc, where ?0.1?x?0.2, 0.8?a<1, 0<b<1, 0<(1-a-b)<1, 0?c<1, Me is selected from one or more of Mn, Al, Mg, Zn, Ga, Ba, Fe, Cr, Sn, V, Sc, Ti, and Zr, and Y is selected from one or more of F, Cl, and Br. The nonaqueous electrolyte includes a nonaqueous solvent and a lithium salt, where the nonaqueous solvent includes a carbonate solvent and a high oxidation potential solvent, and the high oxidation potential solvent is selected from one or more of compounds represented by formula I and formula II.
Type:
Application
Filed:
March 11, 2021
Publication date:
July 1, 2021
Inventors:
Junmin FENG, Peipei CHEN, Chenghua FU, Chengdu LIANG