Journal
JOURNAL OF POWER SOURCES
Volume 134, Issue 1, Pages 148-152Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2004.02.027
Keywords
ruthenium oxide; electrodeposition; supercapacitor; thin-film electrode; morphology
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Thin-film ruthenium oxide electrodes are prepared by cathodic electrodeposition on a titanium substrate. Different deposition periods are used to obtain different film thicknesses. The electrodes are used to form a supercapacitor with a 0.5 M H2SO4 electrolyte. The specific capacitance and charge-discharge periods are found to be dependent on the electrode thickness. A maximum specific capacitance of 788 F g(-1) is achieved with an electrode thickness of 0.0014 g cm(-2). These results are explained by considering the morphological changes that take place with increasing film thickness. (C) 2004 Elsevier B.V. All rights reserved.
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