Corresponding Author

Yong YANG(yyang@xmu.edu.cn)


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


lithium-ion battery, cathode material; LiNi0.6Co0.2Mn0.2O2, initial Coulombic efficiency

Publication Date


Online Available Date


Revised Date


Received Date



[1] Tarascon J M, Armand M. Issues and challenges facing rechargeable lithium batteries[J]. Nature, 2001, 414(6861): 359-367.
[2] Etacheri V, Marom R, Elazari R, et al. Challenges in the development of advanced Li-ion batteries[J]. Energy & Environmental Science, 2011, 4(9): 3243-3262.
[3] Goodenough J B, Park K S, The Li-ion rechargeable battery: a perspective[J]. Journal of the American Chemical Society, 2013, 135(4): 1167-1176.
[4] Oh P, Ko M, Myeong S, et al. Cathode materials: a novel surface treatment method and new insight into discharge voltage deterioration for high-performance 0.4Li2MnO3-
0.6LiNi1/3Co1/3Mn1/3O2 cathode materials[J]. Advanced Energy Materials, 2014, 4(16): 1400631.
[5] Ngala J K, Chernova N A, Ma M, et al. The synthesis, characterization and electrochemical behavior of the layered LiNi0.4Mn0.4Co0.2O2 compound[J]. Journal of Materials Chemistry, 2004, 14(2): 241-220.
[6] Lee K S, Myung S T, Amine K, et al. Structural and electrochemical properties of layered Li[Ni1-2xCoxMnx]O2 (x = 0.1-0.3) positive electrode materials for Li-ion batteries[J]. Journal of The Electrochemical Society, 2007, 154(10): A971-A977.
[7] Noh H J, Youn S, Chong S Y, et al. Comparison of the structural and electrochemical properties of layered Li-[NixCoyMnz]O2 (x = 1/3, 0.5, 0.6, 0.7, 0.8 and 0.85) cathode material for lithium-ion batteries[J]. Journal of Power Sources, 2013, 233: 121-130.
[8] Wang W D(王伟东), Qiu W H(仇卫华), Ding Q Q(丁倩倩), et al. Nickel cobalt manganese based cathode materials for Li-ion batteries technology production and application[M]. Beijing: Chemical Industry Press(化学工业出版社), 2015: 349-350.
[9] Liu W, Oh P, Liu X, et al. Nickel-rich layered lithium transition-metal oxide for high-energy lithium-ion batteries[J]. Angewandte Chemie International Edition, 2015, 54(15): 4440-4457.
[10] Wang D, Li X, Wang Z, et al. Multifunctional Li2O-2B2O3 coating for enhancing high voltage electrochemical performances and thermal stability of layered structured LiNi0.5Co0.2Mn0.3O2 cathode materials for lithium ion batteries[J]. Electrochimica Acta, 2015, 174: 1225-1233.
[11] Kam K C, Mehta A, Heron J T, et al. Electrochemical and physical properties of Ti substituted layered nickel manganese cobalt oxide (NMC) cathode materials[J]. Journal of The Electrochemical Society, 2014, 159(8): A1383-A1392.
[12] Cho Y, Oh P, Cho J. A new type of protective surface layer for high-capacity Ni-based cathode materials: Nanoscaled surface pillaring layer[J]. Nano Letters, 2013, 13(3): 1145-1152.
[13] Hou P Y, Zhang L Q, Gao X P. A high-energy, full concentration-gradient cathode material with excellent cycle and thermal stability for lithium ion batteries[J]. Journal of Materials Chemistry A, 2014, 2(40): 17130-17138.
[14] Kim K J, Yong N J, Lee W J, et al. Effects of inorganic salts on the morphological, structural, and electrochemical properties of prepared nickel-rich Li[Ni0.6Co0.2Mn0.2]O2[J]. Journal of Power Sources, 2014, 268(3): 349-355.
[15] Toby B H. EXPGUI, a graphical user interface for GSAS[J]. Journal of Applied Crystallography, 2001, 34(2): 210-213.
[16] Li Y, Xu R, Ren Y, et al. Synthesis of full concentration gradient cathode studied by high energy X-ray diffraction[J]. Nano Energy, 2015, 19: 522-531.
[17] Ju J H, Ryu K S. Synthesis and electrochemical performance of Li(Ni0.8Co0.15Al0.05)0.8(Ni0.5Mn0.5)0.2O2 with core-shell structure as cathode material for Li-ion batteries[J]. Journal of Alloys and Compounds, 2011, 509(30): 7985-7992.
[18] Li J, Zhang Z R, Guo X J, et al. The studies on structural and thermal properties of delithiated LixNi1/3Co1/3Mn1/3O2 (0 <x ‰¤ 1) as a cathode material in lithium ion batteries[J]. Solid State Ionics, 2006, 177(17/18): 1509-1516.
[19] Jung S K, Gwon H, Hong J, et al. Understanding the degradation mechanisms of LiNi0.5Co0.2Mn0.3O2 cathode material in lithium ion batteries[J]. Advanced Energy Materials, 2014, 4(1): 1300787.



To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.