Journal
INORGANIC CHEMISTRY
Volume 52, Issue 9, Pages 4780-4785Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic301201k
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Funding
- European Community's Marie Curie Initial Training Network (ITN) [214040]
- European Community [255662]
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The present study provides a rapid way to obtain VO2 (B) under economical and environmentally friendly conditions. VO2 (B) is one of the well-known polymorphs of vanadium dioxide and is a promising cathode material for aqueous lithium ion batteries. VO2 (B) was successfully synthesized by rapid single-step hydrothermal process using V2O5 and citric acid as precursors. The present study shows that phase-pure VO2 (B) polytype can be easily obtained at 180 degrees C for 2 h and 220 degrees C for 1 h, that is, the lowest combination of temperature and duration reported so far. The obtained VO2 (B) is characterized by X-ray powder diffraction, high resolution scanning electron microscopy, and Fourier transform infrared spectroscopy. In addition, we present an indirect way to obtain VO2 (M1) by annealing VO2 (B) under vacuum for 1 h.
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