Abstract
Nickel-rich cathode materials LiNi0.6Co0.2Mn0.2O2(NCM622)were synthesized by a co-precipitation-solid state sintering method at different temperatures. The structure, morphology and electrochemical performance of the as-prepared materials were investigated by X-ray powder diffraction (XRD) /Rietveld refinement, scanning electron microscope (SEM) and electrochemical experiments. It is found that NCM622 calcined at 800 ℃ showed the lowest degree of cation disorder (~1.97%) with a high initial Coulombic effiency of 92.2% and the capacity retention of 81.4% after 100 cycles.
Graphical Abstract
Keywords
lithium-ion battery, cathode material; LiNi0.6Co0.2Mn0.2O2, initial Coulombic efficiency
Publication Date
2018-02-28
Online Available Date
2017-04-24
Revised Date
2017-04-20
Received Date
2017-03-17
Recommended Citation
Xiao-yun GUAN, Chao-yu HONG, Jian-ping ZHU, Wei-li WANG, Yi-xiao LI, Yong YANG.
Synthesis and Electrochemical Properties of Nickel-Rich Cathode Material LiNi0.6Co0.2Mn0.2O2 with High Initial Coulombic Efficiency[J]. Journal of Electrochemistry,
2018
,
24(1): 56-62.
DOI: 10.13208/j.electrochem.170317
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol24/iss1/7
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