Abstract
Polyaniline/Graphene oxide (PA/GO) composites were prepared by chemical polymerization of aniline with different wt% of GO under acid conditions. The synthesized samples were characterized by using Fourier transform infra red spectroscopy, ultraviolet–visible absorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy and thermogravimetric analysis. It is found that the dc electrical conductivity dramatically increased to 84 S/m for PA/GO (5 wt%) composite at 150 °C compared to pure PA (0.075 S/m). The PA/GO composites showed a reversible electrochemical response up to 150th repeated cycles as revealed by the cyclic voltammetry study. High specific capacitance of PA/GO composite of 543.75 F/g was obtained in the potential range from 0 to 0.50 V at 2 mA compared with 266.66 F/g for pure PA by galvanostatic charge–discharge analysis. Incorporation of GO into the polymer matrix has a pronounced effect on the electrical conductivity and electrochemical capacitance performance of PA/GO nanocomposites.
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The author would like to thank the Department of Science and Technology (DST) and Science and Engineering Research Board (SERB) India, for their financial support in the research work under “DST Fast Track Scheme for Young Scientist” (No. SERB/F/6115/2013-14).
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Konwer, S. Graphene oxide-polyaniline nanocomposites for high performance supercapacitor and their optical, electrical and electrochemical properties. J Mater Sci: Mater Electron 27, 4139–4146 (2016). https://doi.org/10.1007/s10854-016-4273-3
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DOI: https://doi.org/10.1007/s10854-016-4273-3