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<p>Cellulose, the most abundant natural biopolymer, is a highly attractive material for energy storage devices. In this work, cellulose nanocrystals (CNCs) were extracted from <i>Moringa oleifera</i> seeds, an agricultural waste product commonly found worldwide. A novel well-designed electrode was successfully fabricated using CNCs and polypyrrole (PPy). To synthesize the CNC/PPy composite, unaltered oxidative chemical polymerization of pyrrole was carried out using FeCl<sub>3</sub> as the oxidizing agent. To assess the morphology and structural characteristics of the prepared samples, advanced techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) were employed, while the electrochemical performance of the composite was assessed using symmetric configuration. The device exhibited high specific capacitance of 318.73 F/g at a current density of 1 A/g, capacitance retention of 85.41% after 6000 cycles, energy density of 44.26 Wh/kg, and current density of 252.13 W/kg. The obtained results also revealed that CNC/PPy-based electrodes exhibited high performance as supercapacitors.</p>

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Moringa oleifera Seed-Derived Cellulose Nanocrystals/Polypyrrole Composite for Advanced Symmetric Supercapacitor Applications

  • 期刊论文

  • 发表日期：

    2026年2月26日

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  • P. Alwin Sinthiya,
  • I. Johnson,
  • H. Joy Prabu,
  • A. Felix Sahayaraj,
  • A. Joseph Sagaya Kennedy,
  • J. Salamon

摘要

Cellulose, the most abundant natural biopolymer, is a highly attractive material for energy storage devices. In this work, cellulose nanocrystals (CNCs) were extracted from Moringa oleifera seeds, an agricultural waste product commonly found worldwide. A novel well-designed electrode was successfully fabricated using CNCs and polypyrrole (PPy). To synthesize the CNC/PPy composite, unaltered oxidative chemical polymerization of pyrrole was carried out using FeCl3 as the oxidizing agent. To assess the morphology and structural characteristics of the prepared samples, advanced techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), and X-ray photoelectron spectroscopy (XPS) were employed, while the electrochemical performance of the composite was assessed using symmetric configuration. The device exhibited high specific capacitance of 318.73 F/g at a current density of 1 A/g, capacitance retention of 85.41% after 6000 cycles, energy density of 44.26 Wh/kg, and current density of 252.13 W/kg. The obtained results also revealed that CNC/PPy-based electrodes exhibited high performance as supercapacitors.