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International Journal of Electrochemistry
Volume 2012, Article ID 714092, 7 pages
http://dx.doi.org/10.1155/2012/714092
Research Article

Enhanced Supercapacitance of Hydrous Ruthenium Oxide/Mesocarbon Microbeads Composites toward Electrochemical Capacitors

Anhui Key Laboratory of Metal Materials & Processing, School of Materials Science & Engineering, Anhui University of Technology, Ma'anshan 243002, China

Received 25 November 2011; Accepted 2 January 2012

Academic Editor: Rubin Gulaboski

Copyright © 2012 Changzhou Yuan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A facile hydrothermal strategy was proposed to synthesize RuO2nH2O/mesocarbon microbeads (MCMBs) composites. Further physical characterizations revealed that RuO2nH2O nanoparticles (NPs) were well dispersed upon the surfaces of the MCMB pretreated in 6 M KOH solution. Electrochemical data indicated that the RuO2nH2O/MCMB composites owned higher electrochemical utilization of RuO2 species, better power property, and better electrochemical stability, compared with the single RuO2 phase. The good dispersion of RuO2nH2O NPs and enhanced electronic conductivity made the H+ ions and electrons easily contact the RuO2nH2O phase for efficient energy storage at high rates.