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An experimental study of nonlinear behaviour of capacitance in graphene/carbon nanotube hybrid films

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journal contribution
posted on 27.05.2016, 10:47 authored by Suaad Alsawafi, Xiao Wang, Jie Jin, Mo Song
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.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

The European Physical Journal Applied Physics

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.

Publisher

EDP Sciences

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2016

ISSN

1286-0042

eISSN

1286-0050

Language

en