Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors

Y. S. Lim, Y. P. Tan, H. N. Lim, N. M. Huang, W. T. Tan, Mohd. Ambar Yarmo, Chun Yang Yin

Research output: Contribution to journalArticle

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Abstract

A simple method based on potentiostatic polymerization was developed for the preparation of ternary manganese oxide-based nanocomposite films. The ternary nanocomposites, which were characterized using x-ray diffraction spectroscopy and x-ray photoelectron spectroscopy, showed that the manganese oxide within the film consisted of MnO2 and Mn2O 3. Electrochemical measurements showed that the ternary nanocomposite electrode exhibited high specific capacitance (up to 320.6 F/g), which was attributed to the morphology of a polypyrrole/graphene/manganese-oxide (PPy/GR/MnOx) ternary nanocomposite. The experimental approach maximized the pseudocapacitive contribution from redox-active manganese oxide (MnOx) and polypyrrole (PPy), as well as the electrochemical double layer capacitive (EDLC) characteristic from graphene (GR) sheets. Long cyclic measurements indicated that the specific capacitance of the ternary nanocomposite film could retain 93% of its initial value over 1000 charge/discharge cycles, in the potential range of -0.2 to 0.7 V versus silver/silver chloride electrode (Ag/AgCl).

Original languageEnglish
Pages (from-to)3855-3864
Number of pages10
JournalCeramics International
Volume40
Issue number3
DOIs
Publication statusPublished - Apr 2014

Fingerprint

Manganese oxide
Graphite
Polypyrroles
Graphene
Nanocomposites
Nanocomposite films
Silver
Capacitance
X rays
Electrodes
Photoelectron spectroscopy
Diffraction
Polymerization
Spectroscopy
Supercapacitor
manganese oxide
polypyrrole

Keywords

  • Graphene
  • Manganese oxide
  • Polypyrrole
  • Supercapacitor

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors. / Lim, Y. S.; Tan, Y. P.; Lim, H. N.; Huang, N. M.; Tan, W. T.; Yarmo, Mohd. Ambar; Yin, Chun Yang.

In: Ceramics International, Vol. 40, No. 3, 04.2014, p. 3855-3864.

Research output: Contribution to journalArticle

Lim, Y. S. ; Tan, Y. P. ; Lim, H. N. ; Huang, N. M. ; Tan, W. T. ; Yarmo, Mohd. Ambar ; Yin, Chun Yang. / Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors. In: Ceramics International. 2014 ; Vol. 40, No. 3. pp. 3855-3864.
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