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Title: An experimental study of nonlinear behaviour of capacitance in graphene/carbon nanotube hybrid films
Authors: Alsawafi, Suaad
Wang, Xiao
Jin, Jie
Song, Mo
Keywords: Graphene
Carbon nanotube
Conductivity
Capacitance
Issue Date: 2016
Publisher: EDP Sciences
Citation: ALSAWAFI, S. ... et al., 2016. An experimental study of nonlinear behaviour of capacitance in graphene/carbon nanotube hybrid films. European Physical Journal: Applied Physics, DOI: 10.1051/epjap/2016160006.
Abstract: Graphene (G) and graphene oxide (GO)/carbon nanotubes (CNTs) hybrid films were fabricated as high performance electrode materials by a simple water solution casting method with different contents of single-wall CNT (SWCNT), multi wall CNT (MWCNT) and multi wall CNT with hydroxyl group (MWCNT-OH). The films with MWCNTs showed a layered, interconnected and well entangled structure at nano-scale. With increasing CNT contents, the capacitance of the G/MWCNT and GO/MWCNT films raised almost linearly and their resistance reduced. G/SWCNT and GO/SWCNT films did not form layered structures leading to a very low capacitance. Nonlinear behaviour of the capacitance with voltage has been observed in the G/MWCNT and GO/MWCNT hybrid films. The length and thickness of the hybrid film have significant influences on the capacitance. The capacitance and conductivity increase with increasing the thickness and decrease with increasing the length of the hybrid films. For the application of graphene/CNT hybrid films as electrodes, these characters could be taken into account.
Version: Accepted for publication
DOI: 10.1051/epjap/2016160006
URI: https://dspace.lboro.ac.uk/2134/21390
Publisher Link: http://dx.doi.org/10.1051/epjap/2016160006
ISSN: 1286-0042
Appears in Collections:Published Articles (Materials)

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