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<p>The composite of transition metal oxides with ferrites shows promising potential as the electrode for energy storage applications. In this work, SiO<sub>2</sub> is dispersed in manganese cobalt ferrite (MnCoFe<sub>2</sub>O<sub>4</sub>), synthesized by a sol-gel auto-combustion method. The physicochemical characteristics of MnCoFe<sub>2</sub>O<sub>4</sub>/SiO<sub>2</sub> are evaluated using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), and BET analysis. The electrochemical behaviour is evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS), representing the comparable efficiency and reversibility of the electrode materials. The electrochemical response of the optimized MCF-2% working electrode shows the highest specific capacitance of 296&#xa0;F g<sup>− 1</sup> at a current density of 1&#xa0;A g<sup>− 1</sup> and ~ 92% capacitance retention after 5,000 cycles at 100 mV s<sup>− 1</sup>. The results suggest that the synthesized hierarchical porous MCF-2% was a promising candidate for supercapacitor electrode application.</p>

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Sol-gel auto-combustion SiO2 decorated MnCoFe2O4 composite for supercapacitor electrode material

  • 期刊论文

  • 发表日期：

    2025年12月2日

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  • Mohammad Ullah,
  • Rasidi Roslan,
  • Chen-Chun Yang,
  • Ahmad Salihin Samsudin,
  • Rajan Jose,
  • Izan Izwan Misnon

摘要

The composite of transition metal oxides with ferrites shows promising potential as the electrode for energy storage applications. In this work, SiO2 is dispersed in manganese cobalt ferrite (MnCoFe2O4), synthesized by a sol-gel auto-combustion method. The physicochemical characteristics of MnCoFe2O4/SiO2 are evaluated using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray (EDX), and BET analysis. The electrochemical behaviour is evaluated by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS), representing the comparable efficiency and reversibility of the electrode materials. The electrochemical response of the optimized MCF-2% working electrode shows the highest specific capacitance of 296 F g− 1 at a current density of 1 A g− 1 and ~ 92% capacitance retention after 5,000 cycles at 100 mV s− 1. The results suggest that the synthesized hierarchical porous MCF-2% was a promising candidate for supercapacitor electrode application.