Chinese Journal of Applied Chemistry

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Synthesis and Electrochemical Performance of Reduced Graphene Oxide Coated Cobalt Iron Oxide with Hierarchical Structure

ZHANG Bin1,2, ZHANG Yibo1, YANG Xiangguang1*   

  1. (1.Laboratory of Green Chemistry and Process,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2.University of Chinese Academy of Sciences,Beijing 100049,China)
  • Received:2014-03-28 Revised:2014-05-12 Published:2014-11-08 Online:2014-11-08
  • Contact: yang Xiangguang

Abstract: Binary transition metal oxide CoFe2O4 as a high capacity anode material for lithium-ion batteries with the microflower/nanosheet hierarchical structure was synthesized by layered double hydrotalcite-like precursors. The CoFe2O4 and reduced graphene oxide(rGO)coated CoFe2O4(CoFe2O4/rGO) materials were characterized by powder X-ray diffraction(XRD), scanning electron microscope(SEM), transmission electron microscope(TEM) techniques. The electrochemical performances of the CoFe2O4 and CoFe2O4/rGO electrodes were examined in terms of cyclic voltammetry and discharge/charge profiles. The electrodes exhibit high capacity and rate capacity. Furthermore, the cyclic performance of CoFe2O4/rGO electrode is better than that of the CoFe2O4 electrode.

Key words: lithium-ion batteries, anode materials, binary metal oxides, hierarchicalstructure, electrochemical performance

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