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


Lim, Yin Sze and Tan, Yen Ping and Lim, Hong Ngee and Huang, Nay Ming and Tan, Wee Tee and Yarmo, Mohd Ambar and Yin, Chun Yang (2014) Potentiostatically deposited polypyrrole/graphene decorated nano-manganese oxide ternary film for supercapacitors. Ceramics International, 40 (3). pp. 3855-3864. ISSN 0272-8842; ESSN: 1873-3956


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 1000 charge/discharge cycles, in the potential range of −0.2 to 0.7 V versus silver/silver chloride electrode (Ag/AgCl).

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
DOI Number: https://doi.org/10.1016/j.ceramint.2013.08.026
Publisher: Elsevier
Keywords: Supercapacitor; Manganese oxide; Graphene; Polypyrrole
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 25 Dec 2015 06:00
Last Modified: 29 Nov 2016 07:36
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.ceramint.2013.08.026
URI: http://psasir.upm.edu.my/id/eprint/34977
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