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Template-free graphitic carbon nitride nanosheets coated with polyaniline nanofibers as an electrode material for supercapacitor applications

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  • Kumar, Arun
  • Khanuja, Manika

Abstract

An eco-friendly and facile in-situ polymerization method was used to develop template free acid-etched graphitic carbon nitride (TGCN) nanosheets with optimized PANI nanofibers. PANI nanofibers grown on TGCN nanosheets offer large surface area, high porosity and unique charge transfer properties. The rapid agglomeration of TGCN nanosheets throughout electrochemical measurements lowers the specific capacitance due to its reduced shelf life which was overcome by the incorporation of a suitable polymer (PANI) as a spacer. Herein, We report the comparative electrochemical performance of TGCN/PANI nanocomposites as a function of morphology, composition, surface area and pore size study was obtained using X-Ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), Transmission electron microscopy (TEM), X-Ray Photoelectron Spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) N2 adsorption-desorption. Herein, we prepared TGCN/PANI nanocomposites, which are also optimized to act as a highly efficient electrode nanocomposite for high-performance supercapacitor applications. The optimized TGCN/PANI (TCP50) nanocomposite showed a high specific capacitance of 298.31 F/g at a scan rate of 0.02 V s-1 and long cycling stability with low capacitance loss after 5000 cycles as well as low leakage current and self-discharge. At a power density of 400 W/kg, TCP50 electrode exhibits superior energy density of 33.57 Wh/kg.

Suggested Citation

  • Kumar, Arun & Khanuja, Manika, 2021. "Template-free graphitic carbon nitride nanosheets coated with polyaniline nanofibers as an electrode material for supercapacitor applications," Renewable Energy, Elsevier, vol. 171(C), pages 1246-1256.
    • Handle: RePEc:eee:renene:v:171:y:2021:i:c:p:1246-1256
    DOI: 10.1016/j.renene.2021.02.106
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    References listed on IDEAS

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    1. Mahzoon, Saeed & Nowee, Seyed Mostafa & Haghighi, Mohammad, 2018. "Synergetic combination of 1D-2D g-C3N4 heterojunction nanophotocatalyst for hydrogen production via water splitting under visible light irradiation," Renewable Energy, Elsevier, vol. 127(C), pages 433-443.
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    1. Tamilselvi, R. & Lekshmi, G.S. & Padmanathan, N. & Selvaraj, V. & Bazaka, O. & Levchenko, I. & Bazaka, K. & Mandhakini, M., 2022. "NiFe2O4 / rGO nanocomposites produced by soft bubble assembly for energy storage and environmental remediation," Renewable Energy, Elsevier, vol. 181(C), pages 1386-1401.

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