Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5368051 | Applied Surface Science | 2011 | 5 Pages |
In present investigation MnO2 thin films have been prepared by potentiodynamic (PD), potentiostatic (PS) and galvanostatic (GS) modes of electrodeposition. The effects of different modes on structural, surface morphological and supercapacitive properties of MnO2 thin films have been investigated. Formation of amorphous phase of MnO2 by all three modes is confirmed from X-ray diffraction (XRD) patterns. Significant change in the surface morphologies of MnO2 thin films due to different modes has been observed. The supercapacitive properties of MnO2 thin films have been studied in 1Â M Na2SO4 electrolyte. The maximum supercapacitance obtained for potentiodynamic, potentiostatic and galvanostatic modes is 237, 196 and 184Â FÂ gâ1, respectively. Additionally charge-discharge and impedance of MnO2 thin films have been investigated.
Research highlightsⶠComparison between different modes of electrodeposition. ⶠEffect of different modes on physico-chemical properties of MnO2 films. ⶠPotential candidate for supercapacitors.