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The Electrochemical Properties and Synthesis of V2O5 Xerogel using H2O2  

Park, Heai-Ku (Department of Chemical System Engineering, Keimyung University)
Jung, Jae-Youb (Department of Applied Chemistry, Kyungpook National University)
Lee, Man-Ho (Department of Applied Chemistry, Kyungpook National University)
Publication Information
Applied Chemistry for Engineering / v.16, no.1, 2005 , pp. 107-111 More about this Journal
Abstract
We have performed a study on the electrochemical characteristics and nuclear ($^7Li$) magnetic resonance of $V_2O_5$ xerogels that have been synthesized by the sol-gel reaction of $V_2O_5$ powder with hydrogen peroxide. NMR measurements revealed that chemical shift of $Li^+$ ions varied as lithium ions were inserted into $V_2O_5$ xerogel and that several different sites for $Li^+$ ions existed in the $V_2O_5$ xerogel structure. The electrochemical properties of the xerogel electrodes did not depend much upon the concentration of $V_2O_5$ and HCl that were used for the synthesis of $V_2O_5$ gels. The specific capacity of $V_2O_5$ xerogels were about 140 mAh/g, similar to that of the xerogels prepared by the ion exchange method.
Keywords
lithium battery cathodes; vanadium oxides; vanadium pentoxides;
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