Acta Phys. -Chim. Sin. ›› 2006, Vol. 22 ›› Issue (12): 1555-1559.doi: 10.3866/PKU.WHXB20061224

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Solvothermal Synthesis and Electrochemical Lithiation/Delithiation Performance of FeSb2 Nanorods

QIN Hai-Ying;XIE Jian;MI Jian-Li;TU Jian;ZHAO Xin-Bing   

  1. (State Key Laboratory of Silicon Material, Department of Material Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China)
  • Received:2006-04-25 Revised:2006-07-17 Published:2006-12-06
  • Contact: ZHAO Xin-Bing

Abstract: FeSb2 nanorods, as a potential anode material for lithium-ion batteries, were prepared by solvothermal method in the present work. High-resolution transmission electron microscopy (HRTEM) observations show that the FeSb2 nanorods are 20~40 nm in diameter and 0.2~1.0 μm in length. The charge-discharge measurements and cyclic voltammetry tests reveal that the FeSb2 nanorods exhibit the high initial reversible capacity of 543 mAh•g−1 and an approving cycling stability with 353 mAh•g−1 after 10 cycles. Although the initial coulomb efficiency of the FeSb2 nanorods is only 64%, it is better than that of FeSb2 nano-particles and maintains at 90% after 10 cycles. However, the FeSb2 nanorods could be pulverized and cracked during the cyclic voltammetry test resulting in the failure of the electrode.

Key words: FeSb2 nanorods, Solvothermal synthesis, Anode materials, Lithium-ion batteries