Preparation and electrochemical capacitance of RuO2/TiO2 nanotubes composites |
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Authors: | Wang Yong-gang |
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Affiliation: | Institute of Applied Chemistry, Xinjiang University, Shengli Road 14, Urumqi 830046, P.R. China |
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Abstract: | In this paper, RuO2/TiO2 nanotubes composites were synthesized by loading various amounts of RuO2 on TiO2 nanotubes. The symmetric supercapacitors based on these nanocomposites were fabricated by using gel polymer PVA-H3PO4-H2O as electrolyte. The electrochemical capacitance performance of the nanocomposites in these supercapacitors was investigated by current-potential responses, galvanostatic charge-discharge tests and electrochemical impedance spectroscopy. The results show that the three dimensional nanotube network of TiO2 offers a solid support structure for active materials RuO2, allows the active material to be readily accessible (available) for electrochemical reactions, and improves the efficiency of the active materials. A maximum specific capacitance of 1263 F/g was obtained for the RuO2 which was loading on TiO2 nanotubes. |
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Keywords: | Ruthenium oxide TiO2 nanotubes Supercapacitor |
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