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<p>Ferrite materials, such as Zn ferrites, exhibit remarkable electrochemical performance. However, the application of Zn ferrites in supercapacitors has been limited because of their minimal conductivity. Hence, functionalization of Zn ferrites has developed much interest in improvising its electrochemical properties. Therefore, we synthesize Zn ferrite nanoparticles through combustion method and investigated furthermore over several techniques such as Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), and X-ray photoelectron spectroscopy (XPS). Also, the obtained nanoparticles underwent electrochemical testing such as galvanostatic charge–discharge (GCD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Structural properties through XRD are indicative of a cubic spinel structure of Zn ferrite nanoparticles with the space group Fd-3m. Morphological and elemental studies through SEM and EDS provide topography and elemental composition. The oxidation states of the elements present in the synthesized nanoparticles were identified using the XPS technique. The CV plots showed the effective anode material performance of the fabricated working electrodes of zinc ferrite nanoparticles, and the GCD plots showed a distinctive shape that was indicative of typical pseudocapacitive behavior. The fabricated electrode showed 556.09 F g⁻<sup>1</sup> specific capacitance (<i>C</i>). The electrode exhibited outstanding cyclic stability (89.3%) after 4000 cycles and maintained 84.78% with this specific capacitance as the current density (<i>C</i><sub>d</sub>) increases. The value of bulk resistance (<i>R</i><sub>b</sub>) is 1.02 Ω, indicating good conductivity of the electrode.</p>

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Combustion synthesized zinc ferrite nanoparticles as high-performance electrode materials for supercapacitors

  • 期刊论文

  • 发表日期：

    2025年6月21日

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  • Rajesh Bhardwaj,
  • Amit Kumar Atri,
  • Anoop Singh,
  • Atchaya Sundararajan,
  • Amit Kumar Bali,
  • Rajneesh Kumar Mishra,
  • Aman Deep Acharya,
  • Sandeep Manhas,
  • Sandeep Arya

摘要

Ferrite materials, such as Zn ferrites, exhibit remarkable electrochemical performance. However, the application of Zn ferrites in supercapacitors has been limited because of their minimal conductivity. Hence, functionalization of Zn ferrites has developed much interest in improvising its electrochemical properties. Therefore, we synthesize Zn ferrite nanoparticles through combustion method and investigated furthermore over several techniques such as Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), and X-ray photoelectron spectroscopy (XPS). Also, the obtained nanoparticles underwent electrochemical testing such as galvanostatic charge–discharge (GCD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Structural properties through XRD are indicative of a cubic spinel structure of Zn ferrite nanoparticles with the space group Fd-3m. Morphological and elemental studies through SEM and EDS provide topography and elemental composition. The oxidation states of the elements present in the synthesized nanoparticles were identified using the XPS technique. The CV plots showed the effective anode material performance of the fabricated working electrodes of zinc ferrite nanoparticles, and the GCD plots showed a distinctive shape that was indicative of typical pseudocapacitive behavior. The fabricated electrode showed 556.09 F g⁻1 specific capacitance (C). The electrode exhibited outstanding cyclic stability (89.3%) after 4000 cycles and maintained 84.78% with this specific capacitance as the current density (Cd) increases. The value of bulk resistance (Rb) is 1.02 Ω, indicating good conductivity of the electrode.