Please use this identifier to cite or link to this item: https://doi.org/10.1002/smll.200400137
Title: Preparation and characterization of aligned carbon nanotube-ruthenium oxide nanocomposites for supercapacitors
Authors: Ye, J.-S. 
Cui, H.F. 
Liu, X.
Lim, T.M. 
Zhang, W.-D.
Sheu, F.-S. 
Keywords: Carbon nanotubes
Electrochemical properties
Nanocomposites
Oxides
Supercapacitors
Issue Date: May-2005
Citation: Ye, J.-S., Cui, H.F., Liu, X., Lim, T.M., Zhang, W.-D., Sheu, F.-S. (2005-05). Preparation and characterization of aligned carbon nanotube-ruthenium oxide nanocomposites for supercapacitors. Small 1 (5) : 560-565. ScholarBank@NUS Repository. https://doi.org/10.1002/smll.200400137
Abstract: A novel type of ruthenium oxide (RuO2)-modified multi-walled carbon nanotube (MWNT) nanocomposite electrode (RuO2/MWNT) for supercapacitors has been prepared. The nanocomposites were formed by depositing Ru by magnetic-sputtering in an Ar/O2 atmosphere onto MWNTs, which were synthesized on Ta plates by chemical vapor deposition. Cyclic voltammetry, chronopotentiometry, and electrochemical impedance measurements were applied to investigate the performance of the RuO2/MWNT nunocomposite electrodes. The capacitance of the MWNT electrodes in 1.0 M H2SO 4 is significantly increased from 0.35 to 16.94 mFcm2 by modification with RuO2. The RuO2 film on the surface of the nanotubes is composed of small crystal grains with tilted bundle-like microstructures, as observed by transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The results demonstrate a promising route to prepare RuO2/MWNT-based double-layer supercapacitors. © 2005 Wiley-VCH Verlag GmbH & Co, KGaA.
Source Title: Small
URI: http://scholarbank.nus.edu.sg/handle/10635/101449
ISSN: 16136810
DOI: 10.1002/smll.200400137
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