Effect of different modes of electrodeposition on supercapacitive properties of MnO2 thin films

D. P. Dubal, Dattatray Dhawale, T. P. Gujar, C. D. Lokhande

Research output: Contribution to journalArticle

56 Citations (Scopus)

Abstract

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 1 M Na2SO4 electrolyte. The maximum supercapacitance obtained for potentiodynamic, potentiostatic and galvanostatic modes is 237, 196 and 184 F g-1, respectively. Additionally charge-discharge and impedance of MnO2 thin films have been investigated.

Original languageEnglish
Pages (from-to)3378-3382
Number of pages5
JournalApplied Surface Science
Volume257
Issue number8
DOIs
Publication statusPublished - 1 Feb 2011
Externally publishedYes

Fingerprint

Electrodeposition
Thin films
Diffraction patterns
Electrolytes
Surface morphology
X ray diffraction

Keywords

  • Charge-discharge
  • Impedance spectroscopy
  • Modes of electrodeposition
  • Supercapacitor
  • Surface morphology

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this

Effect of different modes of electrodeposition on supercapacitive properties of MnO2 thin films. / Dubal, D. P.; Dhawale, Dattatray; Gujar, T. P.; Lokhande, C. D.

In: Applied Surface Science, Vol. 257, No. 8, 01.02.2011, p. 3378-3382.

Research output: Contribution to journalArticle

Dubal, D. P. ; Dhawale, Dattatray ; Gujar, T. P. ; Lokhande, C. D. / Effect of different modes of electrodeposition on supercapacitive properties of MnO2 thin films. In: Applied Surface Science. 2011 ; Vol. 257, No. 8. pp. 3378-3382.
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