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EQCM Investigation of the Electrodeposition of MnO2 and Its Capacitance Behavior

Devaraj, S and Munichandraiah, N (2009) EQCM Investigation of the Electrodeposition of MnO2 and Its Capacitance Behavior. In: Electrochemical And Solid State Letters, 12 (9). F21-F25.

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Abstract

Electro-oxidation of Mn2+ to MnO2 by cyclic voltammetry on gold in acidic (0.1 M H2SO4) and neutral (0.1 M Na2SO4) media was studied using electrochemical quartz-crystal microbalance (EQCM). The cyclic voltammetric behavior of Au is different in these electrolytes. From EQCM data of mass variation during cycling, the rate of electrodeposition of MnO2 is higher in the neutral medium than in the acidic medium. Specific capacitance of MnO2 deposited from the neutral medium is higher than that deposited from the acidic medium owing to different crystallographic structures.

Item Type: Journal Article
Additional Information: Copy rights of this article belongs to The Electrochemical Society.
Keywords: Capacitance; Crystal Structure; Electrodeposition; Electrolytes; Manganese Compounds; Voltammetry (Chemical Analysis.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 10 Aug 2009 11:37
Last Modified: 19 Sep 2010 05:40
URI: http://eprints.iisc.ernet.in/id/eprint/22088

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