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Issue 47, 2013
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Fabrication of reduced graphene oxide/TiO2 nanorod/reduced graphene oxide hybrid nanostructures as electrode materials for supercapacitor applications

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Abstract

Two-dimensional (2D) reduced graphene oxide/titanium dioxide nanorod array/reduced graphene oxide (rGO/TiO2 NR/rGO) with a porous hybrid structure was fabricated as an electrode material for use in electrochemical supercapacitors. The structural, morphological, and compositional characteristics of the resulting electrode material were evaluated by using X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of the as-prepared electrodes was characterized by using cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) in 1 M Na2SO4 aqueous electrolyte. The maximum specific capacitance of this rGO/TiO2 NR/rGO electrode was 114.5 F gāˆ’1 at a scan rate of 5 mV sāˆ’1. The electrode exhibited high cycling stability, retaining over 85% of its initial capacitance after 4000 cycles. These results indicate that rGO/TiO2/rGO is a promising candidate for the electrode material in supercapacitor applications.

Graphical abstract: Fabrication of reduced graphene oxide/TiO2 nanorod/reduced graphene oxide hybrid nanostructures as electrode materials for supercapacitor applications

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Article information


Submitted
31 Jul 2013
Accepted
24 Sep 2013
First published
26 Sep 2013

CrystEngComm, 2013,15, 10222-10229
Article type
Paper

Fabrication of reduced graphene oxide/TiO2 nanorod/reduced graphene oxide hybrid nanostructures as electrode materials for supercapacitor applications

A. Ramadoss, G. Kim and S. J. Kim, CrystEngComm, 2013, 15, 10222
DOI: 10.1039/C3CE41517A

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