Electrochemical properties of vanadium oxide aerogels and aerogel nanocomposites

2019-07-16 02:31:41

high properties electrochemical oxide aerogels

责任者: Dong, Winny;Sakamoto, Jeffrey;Dunn, Bruce 单位: Dept. of Mat. Sci. and Engineering, Univ. of California, Los Angeles, Los Angeles, CA 90095-1595, United States 来源出处: Journal of Sol-Gel Science and Technology,2003,26(1-3):641-644 摘要: The electrochemical properties of high surface area transition metal oxide aerogels are extremely interesting because aerogels serve to amplify surface effects. As a result, the electrochemical properties are dominated by surfaces rather than by bulk behavior. In the case of vanadium oxide aerogels this leads to extraordinary electrochemical properties, including an extremely high capacity for lithium and electrochemical responses that are both battery-like and capacitor-like. By exploiting sol-gel synthesis, it is possible to synthesize nanocomposite electrodes in which aerogels are in intimate contact with carbon nanotubes. The resulting nanocomposites exhibit superior electrochemical properties, especially at high discharge. 关键词: Aerogels;Nanostructured materials;Vanadium compounds;Electrochemistry;Surface phenomena;Carbon nanotubes;Electrodes;Lithium ion batteries