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; M.A. Yarmo; C-Y Yin

doi:10.1016/j.ceramint.2013.08.026

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

Journal article

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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, M.A. Yarmo and C-Y Yin

Ceramics International, Vol.40(3), pp.3855-3864

2014

DOI: https://doi.org/10.1016/j.ceramint.2013.08.026

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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 Mn2O3. 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 1,000 charge/discharge cycles, in the potential range of −0.2 to 0.7 V vs. silver/silver chloride electrode (Ag/AgCl).

Details

Title: Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors
Authors/Creators: Y.S. Lim (Author/Creator)
Y.P. Tan (Author/Creator)
H.N. Lim (Author/Creator)
N.M. Huang (Author/Creator)
W.T. Tan (Author/Creator)
M.A. Yarmo (Author/Creator)
C-Y Yin (Author/Creator)
Publication Details: Ceramics International, Vol.40(3), pp.3855-3864
Publisher: Elsevier Ltd.
Identifiers: 991005541337207891
Murdoch Affiliation: School of Chemical and Mathematical Science; School of Veterinary and Life Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.62 Electrochemistry; 2.62.52 Electrode Materials
Web Of Science research areas: Materials Science, Ceramics
ESI research areas: Materials Science