Issue 17, 2013
From the journal:

RSC Advances

Self-assembled graphene@PANI nanoworm composites with enhanced supercapacitor performance†

Yongsong Luo,‡abd   Dezhi Kong,‡ab   Yonglei Jia,b   Jingshan Luo,a   Yang Lu,b   Deyang Zhang,b   Kangwen Qiu,b   Chang Ming Lic  and  Ting Yu*ade  

* Corresponding authors

a Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore
E-mail: yuting@ntu.edu.sg

b Department of Physics & Electronic Engineering, Xinyang Normal University, Xinyang 464000, P. R.China

c Institute for Clean Energy and Advanced Materials, Southwest University, Chongqing 400700, P. R China

d Energy Research Institute at Nanyang Technological University (ERIAN), 639789 Singapore

e Department of Physics, Faculty of Science, National University of Singapore, 117542 Singapore

Abstract

Self-assembled hierarchical graphene@polyaniline (PANI) nanoworm composites have been fabricated using graphene oxide (GO) and aniline as the starting materials. The worm-like PANI nanostructures were successfully obtained via a simple polymerization route. The graphene-wrapped hierarchical PANI nanoworm structures could be prepared using a three-step process by dispersing the PANI nanoworms sequentially into the relevant solution. The morphologies and microstructures of the samples were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Electrochemical properties were also characterized by cyclic voltammetry (CV) and galvanostatic charge–discharge. The results indicated that the integration of graphene and the worm-like PANI nanocomposites possessed excellent electrochemical properties. These hierarchical worm-like graphene@PANI nanostructures could afford an interconnected network with a lot of well-defined nanopores, and further provided more active sites and excellent electron transfer path for improving the electric conductivity as well as good mechanical properties. Supercapacitor devices based on these self-assembled nanocomposites showed high electrochemical capacitance (488.2 F g−1) at a discharge rate of 0.5 A g−1, which also could effectively improve electrochemical stability and rate performances.

Graphical abstract: Self-assembled graphene@PANI nanoworm composites with enhanced supercapacitor performance

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Article information

DOI
https://doi.org/10.1039/C3RA00151B
Article type
Paper
Submitted
22 Oct 2012
Accepted
08 Feb 2013
First published
11 Feb 2013

RSC Adv., 2013,3, 5851-5859

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Self-assembled graphene@PANI nanoworm composites with enhanced supercapacitor performance

Y. Luo, D. Kong, Y. Jia, J. Luo, Y. Lu, D. Zhang, K. Qiu, C. M. Li and T. Yu, RSC Adv., 2013, 3, 5851 DOI: 10.1039/C3RA00151B

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