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<p>Aloe Vera leaf extract was used in an environmentally friendly green synthesis process to create the copper-doped tungsten disulfide (Cu-WS<sub>2</sub>) nanoparticles. Hexagonal structure formation is verified by X-ray diffraction (XRD). Cu doping causes the d-spacing to rise (6.014–6.022&#xa0;Å). The W–S and S–S bond vibrations, crucial for material integrity, were identified using Fourier transform infrared (FTIR) spectroscopy. The more intricate and chaotic structure of Cu-WS<sub>2</sub> signifies heightened porosity, as evidenced by the morphology analysis performed using a scanning electron microscope (SEM). UV–Vis spectroscopy demonstrated improved optical properties, with a blue shift and an elevated energy band gap from 2.494 to 2.512&#xa0;eV. The Cu-WS<sub>2</sub> is more porous, as enhanced pore radius confirmed by the BET analysis. The results of galvanostatic charge discharge (GCD) and cyclic voltammetry (CV) showed increased specific capacitance and energy density. Charge transfer resistance decreases and the ion diffusion coefficient increases as confirmed by the electrochemical impedance spectroscopy (EIS). So, the promising high-performance devices, Cu-WS<sub>2</sub> nanoparticles, open the path for potential energy storage systems with improved charge transfer.</p>

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Enhanced electrolyte ion diffusion in copper-doped metal sulfide layers synthesized via eco-friendly aloe vera extract

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Ali Mujtaba,
  • M. I. Khan,
  • Muzammal Aslam,
  • M. Arslan Nadeem,
  • Safa Ezzine

摘要

Aloe Vera leaf extract was used in an environmentally friendly green synthesis process to create the copper-doped tungsten disulfide (Cu-WS2) nanoparticles. Hexagonal structure formation is verified by X-ray diffraction (XRD). Cu doping causes the d-spacing to rise (6.014–6.022 Å). The W–S and S–S bond vibrations, crucial for material integrity, were identified using Fourier transform infrared (FTIR) spectroscopy. The more intricate and chaotic structure of Cu-WS2 signifies heightened porosity, as evidenced by the morphology analysis performed using a scanning electron microscope (SEM). UV–Vis spectroscopy demonstrated improved optical properties, with a blue shift and an elevated energy band gap from 2.494 to 2.512 eV. The Cu-WS2 is more porous, as enhanced pore radius confirmed by the BET analysis. The results of galvanostatic charge discharge (GCD) and cyclic voltammetry (CV) showed increased specific capacitance and energy density. Charge transfer resistance decreases and the ion diffusion coefficient increases as confirmed by the electrochemical impedance spectroscopy (EIS). So, the promising high-performance devices, Cu-WS2 nanoparticles, open the path for potential energy storage systems with improved charge transfer.