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Electrodeposition of polypyrrole and reduced graphene oxide onto carbon bundle fibre as electrode for supercapacitor

Abdul Bashid, H.A., Lim, H.N., Kamaruzaman, S., Abdul Rashid, S., Yunus, R., Huang, N.M., Yin, C-Y, Rahman, M.M.ORCID: 0000-0002-6778-7931, Altarawneh, M.ORCID: 0000-0002-2832-3886, Jiang, Z-T and Alagarsamy, P. (2017) Electrodeposition of polypyrrole and reduced graphene oxide onto carbon bundle fibre as electrode for supercapacitor. Nanoscale Research Letters, 12 . Article number: 246.

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A nanocomposite comprising of polypyrrole and reduced graphene oxide was electrodeposited onto a carbon bundle fibre (CBF) through a two-step approach (CBF/PPy-rGO-2). The CBF/PPy-rGO-2 had a highly porous structure compared to a nanocomposite of polypyrrole and reduced graphene oxide that was electrodeposited onto a CBF in a one-step approach (CBF/PPy-rGO), as observed through a field emission scanning electron microscope. An X-ray photoelectron spectroscopic analysis revealed the presence of hydrogen bond between the oxide functional groups of rGO and the amine groups of PPy in PPy-rGO-2 nanocomposite. The fabricated CBF/PPy-rGO-2 nanocomposite material was used as an electrode material in a symmetrical solid-state supercapacitor, and the device yielded a specific capacitance, energy density and power density of 96.16 F g− 1, 13.35 Wh kg− 1 and of 322.85 W kg− 1, respectively. Moreover, the CBF/PPy-rGO-2 showed the capacitance retention of 71% after 500 consecutive charge/discharge cycles at a current density of 1 A g− 1. The existence of a high degree of porosity in CBF/PPy-rGO-2 significantly improved the conductivity and facilitated the ionic penetration. The CBF/PPy-rGO-2-based symmetrical solid-state supercapacitor device demonstrated outstanding pliability because the cyclic voltammetric curves remained the same upon bending at various angles. Graphical Abstract: Carbon bundle fibre modified with porous polypyrrole/reduced graphene oxide nanocomposite for flexible miniature solid-state supercapacitor.

Item Type: Journal Article
Murdoch Affiliation(s): School of Engineering and Information Technology
Publisher: SpringerOpen
Copyright: © 2017, The Author(s)
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