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5 (a) 在5 V恒压充电过程中得到的Li1.2Ni0.15Co0.1Mn0.55O2的傅里叶变换Mn K-edge的光谱图[16]；(b) 傅里叶变换K-edge光谱对应的Ni-O，Co-O和Mn-O峰值幅度随充电时间变化的投影图[16]；(c) 正极材料Li[Li0.2Ni0.2Mn0.6]O2在不同电流密度下对应的dQ/dV曲线[18]

Fig. 5 (a) magnitude of the Fourier transformed Mn K-edge spectra of Li1.2Ni0.15Co0.1Mn0.55O2 collected during 5 V constant voltage charging[16]; (b) projection view of the corresponding Ni-O, Co-O, and Mn-O peak magnitudes of the Fourier transformed K-edge spectra as functions of charging time[16]; (c) the dQ/dV curves of cathode material Li[Li0.2Ni0.2Mn0.6]O2 at various current density[18]