Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (01): 51-57.DOI: 10.6023/A1106242 Previous Articles     Next Articles

Full Papers

α-Fe2O3/C复合材料的制备及性能研究

吴超a,b, 庄全超a, 徐守冬a, 崔永丽a, 强颖怀a, 孙智a   

  1. a. 中国矿业大学材料科学与工程学院锂离子电池实验室徐州221116;
    b. 中国矿业大学化学工程学院徐州221116
  • 收稿日期:2011-06-24 修回日期:2011-09-16 出版日期:2012-01-14 发布日期:2012-02-25
  • 通讯作者: 庄全超 E-mail:zhuangquanchao@126.com
  • 基金资助:

    中央高校基本科研业务费专项资金(Nos.2010LKHX03,2010QNB04,2010QNB05)、中国矿业大学科技攀登计划(No.ON090237)、江苏省普通高校研究生科研创新计划(No.CX10B-153Z)及2011中国矿业大学培育学科创新能力提升基金(No.2011XK07)资助项目.

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

Wu Chaoa,b, Zhuang Quanchaoa, Xu Shoudonga, Cui Yonglia, Qiang Yinghuaia, Sun Zhia   

  1. 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:2011-06-24 Revised:2011-09-16 Online:2012-01-14 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).

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