Issue 5, 2011
From the journal:

Energy & Environmental Science

Comparison of GO, GO/MWCNTs composite and MWCNTs as potential electrode materials for supercapacitors

Seyed Hamed Aboutalebi,a   Alfred T. Chidembo,a   Maryam Salari,a   Konstantin Konstantinov,*a   David Wexler,b   Hua Kun Liuac  and  Shi Xue Doua  

* Corresponding authors

a Institute for Superconducting & Electronic Materials (ISEM), Innovation Campus, University of Wollongong, Wollongong, NSW, Australia
E-mail: sha942@uowmail.edu.au, konstan@uow.edu.au
Fax: +61242215731
Tel: +61242215730

b School of Materials, Mechanical and Mechateronics Engineering, University of Wollongong, Wollongong, NSW, Australia
E-mail: david_wexler@uow.edu.au
Fax: +61242215731
Tel: +61242215730

c ARC Centre of Excellence in Electromaterials Sciences, Institute for Superconducting & Electronic Materials (ISEM), Innovation Campus, University of Wollongong, Wollongong, NSW, Australia
E-mail: hua@uow.edu.au
Fax: +61242215731
Tel: +61242215730

Abstract

We report the synthesis of graphene oxide/multi-walled carbon nanotube (MWCNT) composites employing an alternative and novel approach for possible application as supercapacitor materials in energy storage devices. Integrating these nanostructures resulted in a strong synergistic effect between the two materials consequently leading to a robust and superior hybrid material with higher capacitance compared to either graphene oxide or MWCNTs. Specific capacitances of 251, 85 and 60 F g−1 were obtained for graphene oxide-multi-walled carbon nanotubes, MWCNTs and graphene oxide, respectively, in a potential range from −0.1 to 0.5 V. Most importantly, a 120% increase in capacitance was observed with increasing cycle number at 20 mV s−1. The ease of synthesis and the exceptional electrochemical properties make the use of this nanostructure an attractive, alternative way of designing future supercapacitors in both conventional fields and new emerging areas.

Graphical abstract: Comparison of GO, GO/MWCNTs composite and MWCNTs as potential electrode materials for supercapacitors

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Article information

DOI
https://doi.org/10.1039/C1EE01039E
Article type
Paper
Submitted
14 Jan 2011
Accepted
12 Mar 2011
First published
12 Apr 2011

Energy Environ. Sci., 2011,4, 1855-1865

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Comparison of GO, GO/MWCNTs composite and MWCNTs as potential electrode materials for supercapacitors

S. H. Aboutalebi, A. T. Chidembo, M. Salari, K. Konstantinov, D. Wexler, H. K. Liu and S. X. Dou, Energy Environ. Sci., 2011, 4, 1855 DOI: 10.1039/C1EE01039E

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