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<p>Nanocomposite-based supercapacitors have advanced significantly due to their high performance and diverse applications. A sol-gel technique was utilized for the fabrication of pure (Eu<sub>2</sub>O<sub>3</sub>), binary Zr(MoO<sub>4</sub>)<sub>2</sub> and ternary Eu<sub>2</sub>O<sub>3</sub>/Zr(MoO<sub>4</sub>)<sub>2</sub> nanocomposite material. Structure analysis methods, including X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy, were employed to confirm the successful synthesis of Eu<sub>2</sub>O<sub>3</sub> and Zr(MoO<sub>4</sub>)<sub>2</sub>. The SEM analysis ensured the interconnected, uniform, and dispersed structure of the material, which facilitated enhance electrochemical potential. The prepared nanocomposites were employed for supercapacitor performance. Cyclic voltammetry and electrochemical impedance spectroscopy were used to assess the performance of the prepared materials. The ternary nanocomposite Eu<sub>2</sub>O<sub>3</sub>/Zr(MoO<sub>4</sub>)<sub>2</sub> demonstrated good specific capacitance and energy density values of 1176&#xa0;F g<sup>-1</sup> and 20.1 Wh kg<sup>-1</sup>, respectively. The specific capacitance of ternary composite was about 76.49% and 26.34% higher than Eu<sub>2</sub>O<sub>3</sub> and Zr(MoO<sub>4</sub>)<sub>2</sub> respectively. Eu<sub>2</sub>O<sub>3</sub>/Zr(MoO<sub>4</sub>)<sub>2</sub> is recommended as the best sample due to its enhanced electrical conductivity and charge transfer mechanism. electrochemical impedance spectroscopy visualized the electrode-electrolyte interaction during electrochemical performance. Ternary metal nanocomposite Eu<sub>2</sub>O<sub>3</sub>/Zr(MoO<sub>4</sub>)<sub>2</sub> presented lesser internal resistance and improved its energy storage capacity. The outcome suggests that the ternary nanocomposite is a tremendous landmark in electrochemical and will help new researchers in near future.</p> Graphical abstract <p></p>

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Synthesis and electrochemical evaluation of Eu2O3/Zr(MoO4)2 nanocomposites for supercapacitor performance

  • 期刊论文

  • 发表日期：

    2025年10月17日

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  • Hifza Liaqat,
  • Muhammad Asam Raza,
  • Zeshan Ali Sandhu,
  • Sufyan Ashraf,
  • Safiqul Islam,
  • Safyan Mukhtar,
  • Mir Waqas Alam,
  • Faisal Haroon

摘要

Nanocomposite-based supercapacitors have advanced significantly due to their high performance and diverse applications. A sol-gel technique was utilized for the fabrication of pure (Eu2O3), binary Zr(MoO4)2 and ternary Eu2O3/Zr(MoO4)2 nanocomposite material. Structure analysis methods, including X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive X-ray spectroscopy, were employed to confirm the successful synthesis of Eu2O3 and Zr(MoO4)2. The SEM analysis ensured the interconnected, uniform, and dispersed structure of the material, which facilitated enhance electrochemical potential. The prepared nanocomposites were employed for supercapacitor performance. Cyclic voltammetry and electrochemical impedance spectroscopy were used to assess the performance of the prepared materials. The ternary nanocomposite Eu2O3/Zr(MoO4)2 demonstrated good specific capacitance and energy density values of 1176 F g-1 and 20.1 Wh kg-1, respectively. The specific capacitance of ternary composite was about 76.49% and 26.34% higher than Eu2O3 and Zr(MoO4)2 respectively. Eu2O3/Zr(MoO4)2 is recommended as the best sample due to its enhanced electrical conductivity and charge transfer mechanism. electrochemical impedance spectroscopy visualized the electrode-electrolyte interaction during electrochemical performance. Ternary metal nanocomposite Eu2O3/Zr(MoO4)2 presented lesser internal resistance and improved its energy storage capacity. The outcome suggests that the ternary nanocomposite is a tremendous landmark in electrochemical and will help new researchers in near future.

Graphical abstract