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Acta Chimica Sinica >

2012 , Vol. 70 >Issue 01: 51 - 57

DOI: https://doi.org/10.6023/A1106242

Full Papers

Synthesis and Characterization ofα-Fe2O3/C Composite Anode for Lithium Ion Batteries

  • WU Chao ,
  • ZHUANG Quan-Chao ,
  • XU Shou-Dong ,
  • CUI Yong-Li ,
  • QIANG Ying-Huai ,
  • SUN Zhi
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  • a. Li-ion Batteries Lab, School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116;
    b. School of Chemical Engineering, China University of Mining and Technology, Xuzhou 221116

Received date: 2011-06-24

  Revised date: 2011-09-16

  Online published: 2012-02-25

Supported by

Project was supported by the Fundamental Research Funds for the Central Universities(Nos.2010LKHX03,2010QNB04,2010QNB05)and the Science, Technology“Climbing”Program of CUMT(No.ON090237),the Research&Innovation Funds for Jiangsu Ordinary University Graduate(No.CX10B-153Z) and the Innovation&Ability Enhancement Funds for Fostering Subject of CUMT(No.2011XK07).

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Abstract

The α-Fe2O3/C composite was prepared by high-temperature solid-state reaction,its structure and electrochemical performance were characterized by X-ray diffraction(XRD),scanning electron miscro- scopy(SEM),charge/discharge test and electrochemical impedance spectroscopy(EIS).The electrochemical test results indicated that the α-Fe2O3/C composite showed an reversible charge capacity of 935.3 mAh·g-1 after 50 cycles,and had better cycle performance compared with commercial α-Fe2O3.Electrochemical impedance spectroscopy test indicated that there appeared three semicircles respectively representing the Li-ion migration in solid electrolyte interface film(SEI film),electrical conductivity and charge transfer in the first lithiation,and their evolutive principles were also investigated.

Key words： lithium ion battery; α-Fe2O3/C composite material; EIS; SEI film

Cite this article

WU Chao , ZHUANG Quan-Chao , XU Shou-Dong , CUI Yong-Li , QIANG Ying-Huai , SUN Zhi . Synthesis and Characterization ofα-Fe2O3/C Composite Anode for Lithium Ion Batteries[J]. Acta Chimica Sinica, 2012 , 70(01) : 51 -57 . DOI: 10.6023/A1106242

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