Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 1, Pages 860-866Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.04.034
Keywords
MnO2; Nanostructure; Template; Electrodeposition; Supercapacitor
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Funding
- Ministry of Education of China [NCET-09-0215]
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A nanoporous manganese oxide (MnO2) film was fabricated via a polystyrene templated electrodeposition in the solution containing MnSO4. The nanoporous MnO2 film obtained has been characterized by field emission scanning electron microscopy, cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge/discharge methods. The specific capacitance of 1018 F g(-1) was observed at a low current density of 500 mA g(-1). When the current density increased to 30.0 A g(-1), the specific capacitance of 277 F g(-1) remained. The high capacitance retention at high rates makes the prepared MnO2 a promising candidate for supercapacitor applications. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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