Improvement of the electrochemical properties of V_3O_7ㆍH_2O nanobelts for Li battery application through synthesis of V_3O_7@C core-shell nanostructured composites

V_3O_7ㆍH_2O@C core-shell structured composites have been successfully synthesized using V_3O_7ㆍH_2O nanobelts as the cores and glucose as the source of carbon in the presence of sodium lauryl sulfate (SDS). The as-obtained V_3O_7ㆍH_2O@C core-shell materials were characterized by X-ray powder diffrac...

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Published in:Current applied physics 2011, 11(5), , pp.1159-1163
Main Authors: Yifu Zhang, Min Zhou, Meijuan Fan, Chi Huang, Chongxue Chen, Yuliang Cao, Houbin Li, Xinghai Liu
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Min Zhou
Meijuan Fan
Chi Huang
Chongxue Chen
Yuliang Cao
Houbin Li
Xinghai Liu
description V_3O_7ㆍH_2O@C core-shell structured composites have been successfully synthesized using V_3O_7ㆍH_2O nanobelts as the cores and glucose as the source of carbon in the presence of sodium lauryl sulfate (SDS). The as-obtained V_3O_7ㆍH_2O@C core-shell materials were characterized by X-ray powder diffraction (XRD),transmission electron microscopy (TEM), elemental analysis (EA), Fourier transform infrared spectroscopy (FT-IR) and Raman spectrum. The thickness of the carbon shell can be controlled by the hydrothermal reaction time and the quantity of glucose. The surfactants have great influence on fabricating V_3O_7ㆍH_2O@C core-shell composites, which have been discussed in detail. V_3O_7@C composites were subsequently obtained through thermal treatment with V_3O_7ㆍH_2O@C. The electrochemical properties of V_3O_7@C core-shell composites were studied, indicating that the discharge capacity is still 151.2 mAh/g after 45 cycles, which is better than that of pure V_3O_7ㆍH_2O nanobelts. KCI Citation Count: 48
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title Improvement of the electrochemical properties of V_3O_7ㆍH_2O nanobelts for Li battery application through synthesis of V_3O_7@C core-shell nanostructured composites
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