journal6 ›› 2009, Vol. 30 ›› Issue (3): 91-94.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Preparation and Electrochemical Properties Analysis of CuO-Doped Nano-SnO2 Powders as Anode Materials for Lithium Ion Batteries


  1. (1.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China;2.College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China)
  • Online:2009-05-25 Published:2012-04-23

Abstract: CuO-doped nano-SnO2 powders were prepared by chemical coprecipitation method using SnCl4·5H2O,NH3·H2O,and Cu(NO3)2·3H2O as raw materials.The powders were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM).The electrochemical properties of CuO-doped nano-SnO2 powders and undoped SnO2  powders as anode materials of lithium ion batteries were investigated comparatively by charge-discharge curves,cyclability and AC impedance.Results show that SnO2 -CuO nano composite powders with average particle size of 87 nm could be obtained through chemical coprecipitation method.The structure of SnO2  was not changed,but the average particle size of nano-SnO2  decreased due to the introduction of CuO.CuO-doped nano-SnO2  powders show a reversible capacity of 752 mA·g-1 and better cyclability compared with undoped nano-SnO2 .The capacity retention rate of undoped nano-SnO2  and CuO-doped nano-SnO2 powders is 93.6% and 92.0% at 0.1 C rate,respectively,which suggests that introduction of CuO in SnO2  can improve the cyclability of nano-SnO2 .

Key words: tin oxide, CuO-doped, lithium ion batteries, electrochemical properties

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