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    • Keywords

       

      Vanadium oxides; nanostructured materials; chemical synthesis; electrochemical property; VO2(M).

    • Abstract

       

      Vanadium oxides (V3O7.H2O and VO2) with different morphologies have been selectively synthesized by a facile hydrothermal approach using glucose as the reducing and structure-directing reagent. The as-obtained V3O7.H2O nanobelts have a length up to several tens of micrometers, width of about 60–150 nm and thickness of about 5–10 nm, while the as-prepared VO2(B) nanobelts have a length of about 1.0–2.7 𝜇m, width, 80–140 nm and thickness, 2–8 nm. It was found that the quantity of glucose, the reaction temperature and the reaction time had significant influence on the compositions and morphologies of final products. Vanadium oxides with different morphologies were easily synthesized by controlling the concentration of glucose. The formation mechanism was also briefly discussed, indicating that glucose played different roles in synthesizing various vanadium oxides. The phase transition from VO2(B) to VO2(M) were investigated and the phase transition temperature of the VO2(M) appeared at around 68 °C. Furthermore, the electrochemical properties of V3O7.H2O nanobelts, VO2(B) nanobelts and VO2(B) nanosheets were investigated and they exhibited a high initial discharge capacity of 296, 247 and 227 mAh/g, respectively.

    • Author Affiliations

       

      Yifu Zhang1 Meijuan Fan2 Min Zhou1 Chi Huang1 Chongxue Chen1 Yuliang Cao1 Guangyong Xie3 Houbin Li2 Xinghai Liu2

      1. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P.R. China
      2. School of Printing and Packaging, Wuhan University, Wuhan 430079, P.R. China
      3. Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, College of Chemistry and Materials Science, South-Central University for Nationalities, Wuhan 430074, P.R. China
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