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-1was 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.
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