Journal
SCRIPTA MATERIALIA
Volume 61, Issue 11, Pages 1079-1082Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2009.08.040
Keywords
Manganese dioxide; Carbon nanotubes; Nanocomposites; Electrochemical supercapacitor
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada
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Electrodes for electrochemical supercapacitors were fabricated by cathodic electrodeposition of MnO2 on carbon nanotubes (CNTs), which were grown by chemical vapour deposition on stainless steel meshes. The MnO2-CNT nanocomposites were characterized by scanning electron microscopy, transmission electron microscopy, cyclic voltammetry and impedance spectroscopy. The electrodes showed excellent capacitive behaviour in the 0.5 M Na2SO4 electrolyte, with specific capacitance of 356 F g(-1) at a scan rate of 2 mV s(-1). (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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