富锂锰基层状氧化物正极材料面临的挑战及解决方案

张祖豪, 丁晓凯, 罗冬, 崔佳祥, 谢惠娴, 刘晨宇, 林展

Challenges and solutions of lithium-rich manganese-based layered oxide cathode materials

Zuhao ZHANG, Xiaokai DING, Dong LUO, Jiaxiang CUI, Huixian XIE, Chenyu LIU, Zhan LIN

图1 从[100]晶体方向所看的(a) LiMO2(R3ˉm)、(b) Li2MnO3(C2/m)的晶体结构示意图[36]；(c) Li1.2Ni0.2Mn0.6O2循环45次后的高角环形暗场-扫描透射显微镜(STEM-HAADF)图[37]；(d) 典型LMLOs的充电/放电曲线以及循环过程中结构的演变示意图[43]

Fig. 1 The Crystal structure of the (a) LiMO2(R3ˉm)、(b)Li2MnO3(C2/m) viewed from the [100] crystallographic direction[36]; (c) STEM-HAADF image of the 45 cycled Li1.2Ni0.2Mn0.6O2[37]; (d) Schematic diagram showing the charge/discharge curves of a typical LMLOs with the evolution of structure during cycling[43]