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Synthesis and Electrochemical Characterization of Li1?xRbxNi0.4Co0.2Mn0.4O2 Cathode Materials

  • Yan LI Xiaoping WANG Weimin ZHANG Yushi HE Zifeng MA
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  • 1. Shanghai Electrochemical Energy Devices Research Center, School of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. Shanghai Ruge Technology Development Co., Ltd., Shanghai, 200433, China

Received date: 2017-08-15

  Revised date: 2017-09-07

  Online published: 2018-04-10

Abstract

LiNi0.4Co0.2Mn0.4O2 was prepared by coprecipitation method and different proportions of rubidium cations were doped into the materials to enhance the performance. The materials were characterized and the electrochemical performance was investigated. The results showed that the optimized formula is Li0.97Rb0.03Ni0.4Co0.2Mn0.4O2, which obtained an improved electrochemical performance. The incorporation of rubidium can stabilize the crystal structure. The specific reversible capacity of Li0.97Rb0.03Ni0.4Co0.2Mn0.4O2 electrode can still maintain about 130 mA?h/g at 5C.

Cite this article

Yan LI Xiaoping WANG Weimin ZHANG Yushi HE Zifeng MA . Synthesis and Electrochemical Characterization of Li1?xRbxNi0.4Co0.2Mn0.4O2 Cathode Materials[J]. The Chinese Journal of Process Engineering, 2018 , 18(2) : 422 -426 . DOI: 10.12034/j.issn.1009-606X.217296

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