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Simultaneous Electrodeposition of MnO2 and Mn(OH)(2) for Supercapacitor Studies

Nayak, Prasant Kumar and Munichandraiah, N (2009) Simultaneous Electrodeposition of MnO2 and Mn(OH)(2) for Supercapacitor Studies. In: Electrochemical and Solid-State Letters, 12 (6). A115-A119.

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Abstract

Among the various Mn compounds, both MnO2 and Mn(OH)2 are electrochemically active in supercapacitor studies. MnO2 and Mn(OH)2 are simultaneously deposited, through a one-pot method, on the anode and cathode, respectively, of a galvanostatic electrolysis cell consisting of aqueous Mn(NO3)2 electrolyte. MnO2 and Mn(OH)2 coated stainless steel (SS) electrodes are found to exhibit a capacitive behavior with a high specific capacitance. MnO2/SS and Mn(OH)2/SS electrodes are used as the negative and positive electrodes, respectively, in assembling nonsymmetrical capacitors and testing. The results indicate that both Mn-based electrodes prepared simultaneously in a single electrolysis possess interesting electrochemical properties for supercapacitor application.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Electrochemical Society.
Keywords: anodes, cathodes, electrodeposition, manganese compounds, supercapacitors.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 30 Oct 2009 09:27
Last Modified: 19 Sep 2010 05:31
URI: http://eprints.iisc.ernet.in/id/eprint/20007

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