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Morphological evolution of spinel disordered LiNi0.5Mn1.5O4 cathode materials for lithium-ion batteries by modified solid-state method

  • Shiyou Li
  • Jing Xie
  • Dongni Zhao
  • Shan Geng
  • Hongliang Li
  • Chunlei Li
  • Xiaoling Cui
  • Ningshuang ZhangEmail author
Original Paper


The LiNi0.5Mn1.5O4 cathode material with high working voltage is a promising cathode material for next-generation lithium-ion batteries. In this investigation, LiNi0.5Mn1.5O4 materials with different particle sizes and crystal morphologies were synthesized by a modified solid-state method at different temperatures (750, 800, 850, and 900 °C). The evolution panorama of morphology and surface orientation with the temperature change of LiNi0.5Mn1.5O4 cathode materials were studied. The X-ray diffraction and scanning electron microscopy results showed that with the increase of temperature, the particle sizes increased and the crystal growth became more and more complete. Electrochemical tests showed that the material calcined under 850 °C exhibits a truncated octahedral structure and the best electrochemical performance. It delivers a discharge capacity of 124 mA h g−1 at 1 C; even at a high rate of 10 C, a capacity of 90 mA h g−1 can be obtained. The discharge capacity retention of the material is 91.2% after 150 cycles. In addition, the sample prepared by acetate reactant shows excellent electrochemical performance due to the truncated octahedron structure consisted of {111} and {100} surface as well as the appropriate particle size of ~ 1 μm. The {111} surface is conducive to stabilize the material structure, and {100} surface is conducive to the transfer of Li+ ion and electrons. At the same time, it also founded that the appropriate particle size could reduce the electrolyte corrosion of the material and easy for Li+ ion migration. As a result, the material exhibits an improved electrochemical performance.


Lithium-ion batteries LiNi0.5Mn1.5O4 Solid-state reaction Truncated octahedron structure Morphological evolution 


Funding information

This work is supported by the Natural Science Foundation of China (Nos. 21566021 and 21766017), the Transformation of Scientific and Technological Achievements of Gansu Institutions of Higher Education (No. 2017D-04), and the Supporting Plan for Youth Innovative Talents of Longyuan.


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Copyright information

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

Authors and Affiliations

  • Shiyou Li
    • 1
    • 2
  • Jing Xie
    • 1
  • Dongni Zhao
    • 1
  • Shan Geng
    • 1
  • Hongliang Li
    • 1
  • Chunlei Li
    • 1
    • 2
  • Xiaoling Cui
    • 1
    • 2
  • Ningshuang Zhang
    • 1
    Email author
  1. 1.College of Petrochemical TechnologyLanzhou University of TechnologyLanzhouChina
  2. 2.Gansu Engineering Laboratory of Cathode Material for Lithium-ion BatteryLanzhouChina

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