Abstract
High performance Graphene-MnO2-polyaniline (Graphene/MnO2/PANI) nanocomposite was synthesized by hydrothermal process. The structure and morphology of Graphene/MnO2/PANI nanocomposite were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and Fourier-transform infrared spectroscopy (FT-IR). The electrochemical properties of composite were evaluated by constant current charge–discharge, cyclic voltammetry and AC impedance, respectively. The results show that the prepared Graphene/MnO2/PANI nanocomposite exhibits greatly enhanced specific capacitance (305 F g−1) as compared to that of pristine graphene (155 F g−1) and MnO2/PANI (240 F g−1) in 1 M Na2SO4 solution. In addition, the capacity of the Graphene/MnO2/PANI nanocomposite still maintains 90 % after 1000 charge–discharge cycles at a current density of 1 A g−1, exhibiting potential applications in electrode materials for supercapacitors.
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Acknowledgments
This work was financially supported by the National Natural Science Foundation of China (No. 51407087 & 21375055) and the Ph.D. Scientific Research Foundation of Liaocheng University (No. 318051406).
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Chen, W., Tao, X., Li, Y. et al. Hydrothermal synthesis of graphene-MnO2-polyaniline composite and its electrochemical performance. J Mater Sci: Mater Electron 27, 6816–6822 (2016). https://doi.org/10.1007/s10854-016-4632-0
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DOI: https://doi.org/10.1007/s10854-016-4632-0