Electrochemical Properties of Graphene Nanosheet/Polyaniline Nanocomposite as Electrode for Supercapacitors

Abstract:

A graphene nanosheet/polyaniline (GNS/PANI) nanocomposite was synthesized using in situ polymerization. The morphology and microstructure of GNS/PANI nanocomposite were examined by transition electron microscopy (TEM) and X-ray diffraction (XRD). Electrochemical properties were characterized by cyclic voltammetry (CV) and galvanostatic charge/discharge. GNS as a support material could provide more active sites for nucleation of PANI as well as excellent electron transfer path. The GNS was homogeneously coated on both surfaces with PANI, and a high specific capacitance of 331 F g^-1 was obtained at a current load of 0.02 A g^-1. The kinetics properties of GNS/PANI electrodes were investigated by AC impedance measurements. GNS/PANI electrode exhibited higher electrochemical activity and more favorable kinetic properties during charge and discharge process.

• Periodical: Advanced Materials Research (Volume 936)
• Pages: 364-368
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.936.364
• Online since: June 2014
• Authors: Ran Ran Yao, Ning Na Yao, Dong Lin Zhao*, Li Xu
• Keywords: Electrochemical Properties, Graphene Nanosheets (GNS), Polyaniline, Super-Capacitor (SC)

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