高镍三元层状锂离子电池正极材料：研究进展、挑战及改善策略

栗志展, 秦金磊, 梁嘉宁, 李峥嵘, 王瑞, 王得丽

High-nickel ternary layered cathode materials for lithium-ion batteries： Research progress， challenges and improvement strategies

Zhizhan LI, Jinlei QIN, Jianing LIANG, Zhengrong LI, Rui WANG, Deli WANG

图2 (a)～(c) Li[Ni x Co y Mn1-x-y ]O2 (x=0.6, 0.8, 0.9, 0.95, 1)：初始充放电曲线，循环性能和 c 轴晶格参数变化[17]；(d) NCM三元材料循环前后结构退化示意图[18]；(e) NC90、NCM90和NM90正极首次充电状态下横截面SEM图像[19]

Fig. 2 (a)-(c) Li[Ni x Co y Mn1-x-y ]O2 (x=0.6, 0.8, 0.9, 0.95, 1) cathodes: Initial charge-discharge profiles, cycling performance and variations of c-axis lattice parameters with cell voltage[17]; (d) Schematic diagram of structural degradation of NCM materials after cycling[18]; (e) Magnified cross-sectional SEM images of the first charged state of the NC90, NCM90, and NM90 cathodes[19]