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Synthesis of Polyaniline/Graphene Nanocomposites and Its Optical, Electrical and Electrochemical Properties

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Polyaniline/Graphene nanocomposites (PANI/G) were synthesised at various loadings of graphene to polyaniline (PANI) ratio. Their structural and morphological characterization has been investigated by DRS-UV-Vis, Raman spectroscopy, XRD, field emission scanning electron microscopy. Further the electrical conductivity and electrochemical measurements were measured using four probe method and cyclic voltammetry. As the weight ratio of PANI to G decreased from 9:1 to 5:5 (G1:G5), the electrical conductivity of the nanocomposites increased by an order of four. This was attributed to a considerable increase in the carrier mobility in the presence of graphene sheets. As a result, the conductivity of the nanocomposites increased from 16.11 to 460.08 S cm–1 at 298 K. Electrochemical properties of the composites are measured by cyclic voltammet- ric technique to measure the band gap and specific capacitance of the composites. Results predict that the developed PANI/G nanocomposites could be used in electrochemical energystorage device.
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Document Type: Research Article

Publication date: 01 February 2013

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  • Advanced Science, Engineering and Medicine (ASEM) is a science, engineering, technical and medical journal focused on the publishing of peer-reviewed multi-disciplinary research articles dealing with all fundamental and applied research aspects in the areas of (1) Physical Sciences, (2) Engineering, (3) Biological Sciences/Health Sciences, (4) Medicine, (5) Computer and Information Sciences, (6) Mathematical Sciences, (7) Agriculture Science and Engineering, (8) Geosciences, and (9) Energy/Fuels/Environmental/Green Science and Engineering.
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