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Vanadium Oxide Nanomaterials Prepared Using Urea and Formic Acid as Cathodes for Lithium Batteries  

Park, Su-Jin (Department of Applied Chemistry, Kyungpook National University)
Lee, Man-Ho (Department of Applied Chemistry, Kyungpook National University)
Park, Heai-Ku (Department of Chemical System Engineering, Keimyung University)
Publication Information
Applied Chemistry for Engineering / v.21, no.2, 2010 , pp. 211-216 More about this Journal
Abstract
$(NH_4)_{0.3}V_2O_5$ nanorods and $V_2O_5$ nanosheets have been synthesized by the reaction of $V_2O_5$ gel via homogeneous precipitation process employing urea and formic acid. The electrochemical and chemical characteristics of these nanomaterials have been investigated using TGA, SEM, FT-IR, XRD, and LSV. The interlayer distance of $(NH_4)_{0.3}V_2O_5$ was about $10.7{\AA}$, and that of $V_2O_5$ synthesized by using formic acid was $14.2{\AA}$. The surface morphology of $(NH_4)_{0.3}V_2O_5$ and $V_2O_5$ showed features that looked like nanorods and nanosheets, respectively. Specific capacity of $(NH_4)_{0.3}V_2O_5$ nanorods prepared at $95^{\circ}C$ was at least 280 mAh/g at 10 mA/g discharge rate.
Keywords
lithium battery cathode; ammonium vanadium oxides; vanadium oxides;
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