Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (7): 1495.doi: 10.7503/cjcu20180829

• Physical Chemistry • Previous Articles     Next Articles

Morphology Control and Lithium Storage Performance of Micro/nano Li-rich Cathode Material

YANG Jinge, LI Yujie*(), LU Di, CHEN Yufang, SUN Weiwei, ZHENG Chunman*()   

  1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
  • Received:2018-12-10 Online:2019-07-10 Published:2019-07-12
  • Contact: LI Yujie,ZHENG Chunman E-mail:powerlyj@163.com;zhengchunman@nudt.edu.cn
  • Supported by:
    † Supported by the Natural Science Foundation of Hunan Province, China(No.2018JJ3595).

Abstract:

Hierarchical micro/nano Li-rich Li1.2Ni0.13Co0.13Mn0.54O2 cathode material was synthesized by urea-based hydrothermal method followed by a heat treatment. The structure and morphology of precursor particles and cathode material particles could be tailored by different reaction solvents. The fusiform Li-rich layered material Li1.2Mn0.54Ni0.13Co0.13O2 delivers an discharge capacity about 300 mA·h/g at a current density of 0.1C and 92 mA·h/g at 5C. Also, the cathode material has a capacity retention of 85% after 70 cycles at 0.5C, showing an excellent cycling performance and rate performance. This method is instructive for synthesizing other cathode materials in energy storage field.

Key words: Micro/nano structure, Li-rich layered cathode material, Morphology control, Lithium-ion battery

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