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Corresponding Author

Yong YANG(yyang@xmu.edu.cn)

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

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