Effect of deposition method and the surfactant on high capacitance of electrochemically deposited MnO2 on stainless steel substrate
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Date
2013
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Elsevier B.V.
Abstract
Manganese dioxide has been considered as a promising material for electrochemical supercapacitors. In order to obtain a high specific capacitance, MnO<inf>2</inf> has been electrodeposited from an aqueous acidic solution of MnSO<inf>4</inf> consisting of an ionic surfactant, namely, sodium lauryl sulphate (SLS) on stainless steel. The electrodeposited films of MnO<inf>2</inf> in the presence of the surfactant possess greater porosity and hence greater surface area in relation to the films prepared in the absence of the surfactant. Cyclic voltammetry and galvanostatic charge-discharge cycling experiments reveal that specific capacitance is higher by about 22% due to the effect of SLS. © 2012 Published by Elsevier B.V.
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Keywords
Capacitors, Cyclic voltammetry, Electrodeposition, Manganese oxide, Sodium, Aqueous acidic solution, Charge discharge cycling, Charge/discharge, Deposition methods, Electrochemical supercapacitor, Electrodeposited films, Galvanostatics, Ionic surfactants, Manganese dioxide, Specific capacitance, Stainless steel substrates, Sulphates, Super capacitor, Surface area, Surface active agents
Citation
Journal of Electroanalytical Chemistry, 2013, 690, , pp. 13-18