Nayak, Prasant Kumar and Devaraj, S and Munichandraiah, N (2010) An EQCM Investigation of Electrochemical Precipitation of Mn(OH)(2) and Its Capacitance Behavior. In: Electrochemical and Solid-State Letters, 13 (11). F29-F32.
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Electrochemical quartz crystal microbalance (EQCM) has been used to study the electrochemical precipitation of Mn(OH)(2) on a Au crystal and its capacitance properties. From the EQCM data, it is inferred that NO3- ions get adsorbed on the Au crystal and then undergo reduction, resulting in an increase in pH near the electrode surface. Precipitation of Mn2+ occurs as Mn(OH)(2), with an increase in mass of the Au crystal. Mn(OH)(2) undergoes oxidation to MnO2, which exhibits electrochemical supercapacitor behavior on subjecting to electrochemical cycling in a Na2SO4 electrolyte. EQCM data indicate mass variations corresponding to surface insertion/extraction of Na+ ions during discharge/charge cycling. (C) 2010 The Electrochemical Society. DOI: 10.1149/1.3479665] All rights reserved.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The Electrochemical Society.|
|Department/Centre:||Division of Chemical Sciences > Inorganic & Physical Chemistry|
|Date Deposited:||08 Nov 2010 10:02|
|Last Modified:||08 Nov 2010 10:02|
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