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<p>Conducting polymer-based nanocomposites have garnered significant attention for their potential in energy storage applications, particularly as supercapacitor materials. This study investigates the dielectric properties of polyaniline (PANI) nanocomposites incorporating multi-walled carbon nanotubes (MWCNTs) and reduced graphene oxide (rGO), synthesized via in situ chemical oxidative polymerization. Structural characterization was performed using Raman spectroscopy, X-ray diffraction (XRD), and Fourier-transform infrared (FTIR) spectroscopy. SEM micrographs show agglomeration of MWCNT/rGO, which affects strongly the morphology of base matrix of PANI molecule. Specimens were also subjected to thermal stability analysis using TGA where results show the significant thermal stability of PANI nanocomposites with MWCNTs and rGO compared with pure polyaniline. Dielectric properties were evaluated using an impedance analyzer across a frequency range of 100&#xa0;Hz to 1&#xa0;MHz. Results demonstrate that both MWCNT and rGO significantly enhance the dielectric constant of PANI, with the PANI/rGO composite exhibiting superior performance. The improved dielectric properties are attributed to the synergistic effects of rGO’s high surface area and MWCNT’s conductive pathways, facilitating efficient charge transport and polarization. These findings suggest that PANI-based nanocomposites, particularly PANI/rGO, are promising candidates for high-performance supercapacitor electrodes and other energy storage devices.</p>

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Dielectric Behavior of Polyaniline Nanocomposites with MWCNT and rGO Fillers for High-Performance Energy Storage Applications

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Ajay Kumar Sharma,
  • Vipin Kumar Jain,
  • Thakur Sudesh Kumar Raunija,
  • Jatinder Garg,
  • Sonu Bala Garg

摘要

Conducting polymer-based nanocomposites have garnered significant attention for their potential in energy storage applications, particularly as supercapacitor materials. This study investigates the dielectric properties of polyaniline (PANI) nanocomposites incorporating multi-walled carbon nanotubes (MWCNTs) and reduced graphene oxide (rGO), synthesized via in situ chemical oxidative polymerization. Structural characterization was performed using Raman spectroscopy, X-ray diffraction (XRD), and Fourier-transform infrared (FTIR) spectroscopy. SEM micrographs show agglomeration of MWCNT/rGO, which affects strongly the morphology of base matrix of PANI molecule. Specimens were also subjected to thermal stability analysis using TGA where results show the significant thermal stability of PANI nanocomposites with MWCNTs and rGO compared with pure polyaniline. Dielectric properties were evaluated using an impedance analyzer across a frequency range of 100 Hz to 1 MHz. Results demonstrate that both MWCNT and rGO significantly enhance the dielectric constant of PANI, with the PANI/rGO composite exhibiting superior performance. The improved dielectric properties are attributed to the synergistic effects of rGO’s high surface area and MWCNT’s conductive pathways, facilitating efficient charge transport and polarization. These findings suggest that PANI-based nanocomposites, particularly PANI/rGO, are promising candidates for high-performance supercapacitor electrodes and other energy storage devices.