Research & Development

Study on Synthesis and electrochemical performance of Li2MnO3-LiNi0.8Co0.1Mn0.1O2 composite cathodes materials

  • Fan Xiong ,
  • Tongzhen Wang ,
  • Qiang Gao ,
  • Fengru Cheng ,
  • Xiqing Luo
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  • School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China

Received date: 2019-07-21

  Online published: 2020-02-26

Abstract

A co-precipitation route was utilized to synthesize the precursor of Ni0.8Co0.1Mn0.1(OH)2,which was mixed with MnCO3 and Li2CO3 afterwards. After calcination in the oxygen atmosphere,Li2MnO3-LiNi0.8Co0.1Mn0.1O2 composite material was obtained.The structure,composition and morphology of the prepared materials were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM) and transmission electron microscopy(TEM),respectively.The electrochemical performance of the material was tested by galvanostatic charge/discharge measurements and electrochemical impedance spectroscopy.Results showed that the 3%(mass fraction) Li2MnO3 composite material exhibit higher initial discharge capability(183 mA·h/g at 0.5C),more stable cycle performance(with capacity retention of 93.9% after 120 cycles)and better rate performance,compared with unmodified cathode.Thus,this strategy is extremely promising for the preparation of LiNi0.8Co0.1Mn0.1O2 electrode materials with enhanced electrochemical performances.

Cite this article

Fan Xiong , Tongzhen Wang , Qiang Gao , Fengru Cheng , Xiqing Luo . Study on Synthesis and electrochemical performance of Li2MnO3-LiNi0.8Co0.1Mn0.1O2 composite cathodes materials[J]. Inorganic Chemicals Industry, 2020 , 52(1) : 68 -72 . DOI: 10.11962/1006-4990.2019-0108

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