, Volume 25, Issue 3, pp 959–968 | Cite as

Effects of raw materials on the electrochemical performance of Na-doped Li-rich cathode materials Li[Li0.2Ni0.2Mn0.6]O2

  • Hongzhao Liu
  • Lei Tao
  • Wei Wang
  • Bo ZhangEmail author
  • Mingru Su
Original Paper


Lithium-ion battery cathode materials Li1.2Ni0.2Mn0.6O2 and Li1.15Na0.05Ni0.2Mn0.6O2 were synthesized using different Na source through a facile ball-milling method. The XRD results reveal that all the cathode materials display a layered structure of solid solution. Charge/discharge tests demonstrate that the Li1.15Na0.05Ni0.2Mn0.6O2 electrode using LiAC and NaAC as raw materials shows an excellent electrochemical performance including high reversible discharge capacity (232 mAhg−1 at 0.2 C), enhanced rate capability (109 mAhg−1 at 5 C), and superior cycling stability (96.64% capacity retention after 80 cycles). Furthermore, EIS results also support that better raw materials can effectively decrease the charge transfer resistance and facilitate the Li diffusion coefficient of the as-prepared cathode material. It is also confirmed that the better electrochemical performance of the Na-doped sample Li1.15Na0.05Ni0.2Mn0.6O2 mainly come from the Na-doping process which stabilizes the host layered structure by suppressing the conversion from layered to spinel structure during cycling.


Lithium-ion battery Raw materials Na-doping Electrochemical performance 



This study was financially supported by the National Natural Science Foundation of China (Nos. 51504225 and 51404220) and Natural Science Foundation of Jiangsu Province (BK20150506 and BK20150535).


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Hongzhao Liu
    • 1
    • 2
  • Lei Tao
    • 3
  • Wei Wang
    • 1
    • 2
  • Bo Zhang
    • 1
    • 2
    Email author
  • Mingru Su
    • 4
  1. 1.Zhengzhou Institute of Multipurpose Utilization of Mineral ResourcesZhengzhouChina
  2. 2.Key Laboratory of Evaluation and Multipurpose Utilization of Polymetallic Ore of Ministry of Land and ResourcesZhengzhouChina
  3. 3.JiangSu GE New Energy Technology Co., LtdYangzhongChina
  4. 4.School of Material Science and Technology Jiangsu UniversityZhenjiangChina

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