ACES  Vol.2 No.1 , January 2012
Poorly Crystalline Ru0.4Sn0.6O2 Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors
Abstract: Poorly crystalline Ru0.4Sn0.6O2 solid solution with size about 2 nm coated on Ti substrate was prepared by thermal decomposition at 260°C. The electrodes were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for structural and morphological studies. The Capacitance properties of the electrodes were tested by cyclic voltammetry and charge-discharge tests. The results show that the electrodes have mud-cracks structure with cracks 0.2 μm in width. The electrode has stable electrochemical capacitor properties with a maximum specific capacitance of 648 F/g within a scan potential window –0.1 - 1.0 V in 0.5 M H2SO4 electrolyte solution.
Cite this paper: Y. Shao, Z. Yi, F. Lu, F. Deng and B. Li, "Poorly Crystalline Ru0.4Sn0.6O2 Nanocomposites Coated on Ti Substrate with High Pseudocapacitance for Electrochemical Supercapacitors," Advances in Chemical Engineering and Science, Vol. 2 No. 1, 2012, pp. 118-122. doi: 10.4236/aces.2012.21014.

[1]   R. E. Conway, “Electrochemical Supercapacitors: Scientific Fundamentals and Technical Applications,” Kluwer Academic, Plenum Publishers, New York, 1999.

[2]   X. Pang, Z. Ma and L. Zuo, “Research Progress in Electrode Materials for Supercapacitor Used Metal Oxides,” Surface Technology, Vol. 38, No. 3, 2009, pp. 77-82.

[3]   S. Sarangapani, “Materials for electrochemical Capacitors,” Journal of The Electrochemical Society, Vol. 143, No. 11, 1996, pp. 3791-3799. doi:10.1149/1.1837291

[4]   K. H. Chang and C. C. Hu, “Hydrothermal Synthesis of Binary Ru-Ti Oxides with Excellent Performances for Supercapacitors,” Electrochimica Acta, Vol. 52, No. 4, 2006, pp. 1749-1757. doi:10.1016/j.electacta.2006.01.076

[5]   R. K?tz and M. Carlen, “Principles and Applications of Electrochemical Capacitors,” Electrochimica Acta, Vol. 45, No. 15-16, 2000, pp. 2483-2498. doi:10.1016/S0013-4686(00)00354-6

[6]   V. D. Patake, S. M. Pawar, V. R. Shinde, et al., “The Growth Mechanism and Supercapacitor Study of Anodically Deposited Amorphous Ruthenium Oxide Films,” Current Applied Physics , Vol. 10, No. 1, 2010, pp. 99- 103. doi:10.1016/j.cap.2009.05.003

[7]   H.-R. Chen, H.-H. Lai and J.-J. Jow, “Annealing Effect on the Performance of RuO2-Ta2O5/Ti Electrodes for Use in Supercapacitors,” Materials Chemistry and Physics, Vol. 125, No. 3, 2011, pp. 652-655. doi:10.1016/j.matchemphys.2010.10.003

[8]   Y.-Y. Liang , L. H. Lin and X.-G. Zhang, “Solid State Synthesis of Hydrous Ruthenium Oxide for Supercapacitors,” Journal of Power Sources, Vol. 173, No. 1, 2007, pp. 599-605. doi:10.1016/j.jpowsour.2007.08.010

[9]   H.-Q. Li, Y. Zou and Y.-Y. Xia, “A Study of Nitroxide Polyradical/Activated Carbon Composite as the Positive Electrode Material for Electrochemical Hybrid Capacitor,” Electrochim Acta, Vol. 52, No. 5, 2007, pp. 2153- 2157. doi:10.1016/j.electacta.2006.08.031

[10]   J. Wen, X. Ruan and Z. Zhou, “Preparation and Electrochemical Performance of Novel Ruthenium-Manganese Oxide Electrode Materials for Electrochemical Capacitors,” Journal of Physics and Chemistry of Solids, Vol. 70, No. 5, 2009, pp. 816-820. doi:10.1016/j.jpcs.2009.03.015

[11]   W. Zhang, K. Liu, Y. Zhang, et al., “Studies of Charge-Discharge Process in MnO2 Supercapacitor,” Chemistry, Vol. 70, No. 3, 2007, pp. 217-221.

[12]   Y. Chen, W. Zhang and Z. Zhang, “Effect of Additive Doping on Electrochemical Performance of Hydrothermal Prepared MnO2,” Chinese Journal of Power Sources, Vol. 33, No. 8, 2009, pp. 673-678.

[13]   Y. Chen, W. Zhang and Z. Zhang, “Molten Salt Synthesis and Electrochemical Properties of Manganese Dioxide,” Fine Chemical, Vol. 26, No. 2, 2009, pp. 115-118.

[14]   Y. Feng, M. Zhang, Y. Chen, et al., “Preparation and Electrochemical Performance of Cr Doped MnO2,” The Chinese Journal of Nonferrous Metals, Vol. 15, No. 2, 2005, pp. 316-320.

[15]   A. Yuan and Q. Zhang, “Solid Reaction Preparation and Electrochemical Characteristics of Nano-Structured Co3O4 Material for Supercapacitor,” Journal of Functional Materials and Devices, Vol. 13, No. 1, 2007, pp. 1-6.

[16]   X. Wang, Y. Ou and A. Kemu, “Supercapacitor Characteristics of Co(OH)2 Synthesized by Hydrothermal Synthesis,” Natural Science Edition, Yili Normal University, Vol. 4, 2009, pp. 20-22.

[17]   M. L. Zhang and Z. X. Liu, “Supercapacitor Characteristics of Co(OH)2 Synthesized by Deposition Transformation,” Chinese Journal of Inorganic Chemistry, Vol. 18, No. 5, 2002, pp. 513-517.

[18]   Y. Chen, L. Liu and Z. Zhang, “Preparation of NiO by Parallel Flow Precipitation Process and Its Capacitance Performance,” Fine Chemicals, Vol. 25, No. 5, 2002, pp. 424-427.

[19]   Z. Yu, Y. Dai and W. Chen, “Preparation and Electrochemical Properties of Nanostructured Flower-like NiO by Hydrothermal-Decomposition,” Journal of Xihua University, Vol. 29, No. 1, 2010, pp. 99-103.

[20]   C.-C. Hu, K.-H. Chang and C.-C. Wang, “Two-Step Hydrothermal Systhesis of Ru-Sn Oxide Composites for Electrochemical Supercapacitors,” Electrochimica Acta, Vol. 52, 2007, pp. 4411-4418. doi:10.1016/j.electacta.2006.12.022