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Transition metal ions-doped polyaniline/graphene oxide nanostructure as high performance electrode for supercapacitor applications

Asen, P ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1007/s10008-017-3831-9
  3. Publisher: Springer New York LLC , 2018
  4. Abstract:
  5. Polyaniline/graphene oxide (PANI/GO) co-doped with Zn2+ and Fe3+ was synthesized via a simple and low cost one-step chronoamperometry method on stainless steel (SS) as the substrate. The Fe3+-Zn2+-PANI/GO nanocomposite is characterized using X-ray diffraction as well as Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and field emission scanning electron microscopy. Also, cyclic voltammetry, galvanostatic charge-discharge, and electrochemical impedance spectroscopy are used to study the electrochemical performance of the as-prepared electrode materials. Significantly, the Fe3+-Zn2+-PANI/GO nanocomposite exhibits a specific capacitance of 1140 F g−1 at a current density of 10 A g−1, which is far better than PANI (250 F g−1), PANI/GO (610 F g−1), Fe3+-PANI/GO (744 F g−1), and Zn2+-PANI/GO (964 F g−1). After 4000 cycles, the fabricated Fe3+-Zn2+-PANI/GO/SS electrode shows 85% capacitance retention at a current density of 5 A g−1. The resulting good electrochemical performance is owing to the combination of electrical double layer capacitance of GO and pseudocapacitive characteristic of PANI and transition metal ions, which can effectively increase the specific capacitance value and cycling performance of the prepared nanocomposite. © 2017, Springer-Verlag GmbH Germany, part of Springer Nature
  6. Keywords:
  7. Graphene oxide ; Transition metal ions ; Capacitance ; Chronoamperometry ; Cyclic voltammetry ; Doping (additives) ; Electric discharges ; Electrochemical impedance spectroscopy ; Electrodeposition ; Electrodes ; Electron microscopy ; Energy dispersive spectroscopy ; Field emission microscopes ; Fourier transform infrared spectroscopy ; Graphene ; High resolution transmission electron microscopy ; Iron compounds ; Metal ions ; Metals ; Nanocomposites ; Polyaniline ; Scanning electron microscopy ; Stainless steel ; Supercapacitor ; Transition metal compounds ; Transition metals ; Transmission electron microscopy ; X ray diffraction ; X ray spectroscopy ; Zinc ; Capacitance retention ; Electrical double-layer capacitances ; Electrochemical performance ; Energy dispersive X ray spectroscopy ; Field emission scanning electron microscopy ; Galvanostatic charge discharges ; Graphene oxides ; Supercapacitor application ; Electrochemical electrodes
  8. Source: Journal of Solid State Electrochemistry ; Volume 22, Issue 4 , 2018 , Pages 983-996 ; 14328488 (ISSN)
  9. URL: https://link.springer.com/article/10.1007/s10008-017-3831-9