Abstract
A new redox graphene/copper–nickel solid solution/polyaniline (RGO/Cu–Ni/PANI) composite as a supercapacitor electrode is designed and successfully prepared by a flexible two-step method: first nano copper–nickel is supported on the surface of the oxide graphene, forming the RGO/Cu–Ni composite, followed by PANI is coated on RGO/Cu–Ni via in-situ polymerization process. The structure of the ternary composite is characterized by X-ray power diffraction, X-ray photoelectron spectroscopy, fourier transform infrared and scanning electron microscope. The RGO/Cu–Ni/PANI composite material shows better electrochemical performances than the pure PANI. The results show that the RGO/Cu–Ni/PANI composite have a great specific capacitance 674.7 F g−1 at 1 A g−1 current density and good cyclic stability of 90.1% over 1000 charge–discharge cycles, which can be attributed to the synergistic effect between RGO, Cu–Ni and PANI. Thus, the RGO/Cu–Ni/PANI composite is excellent electrode material in supercapacitor with high specific capacitance and the long-term cycle stability, and that is helpful in developing new kinds of portable energy storage devices.
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The work was supported by Harbin Scientific and Technological Special Fund for Innovative Talents (Grant No. 2012RFXXG093).
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Luan, D., Zhang, X., Yu, Y. et al. Fabrication and electrochemical properties of graphene/copper–nickel solid solution reinforced polyaniline composite. J Mater Sci: Mater Electron 28, 14738–14746 (2017). https://doi.org/10.1007/s10854-017-7342-3
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DOI: https://doi.org/10.1007/s10854-017-7342-3