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<p>ZnMn₃O₄ nanoparticles were successfully synthesized using a simple solution combustion method and subsequently employed as target material for the fabrication of ZnMn₃O₄ thin films using the electron beam evaporation technique. Structural characterization through X-ray diffraction (XRD) and Raman spectroscopy confirmed the presence of characteristic ZnMn₃O₄ peaks, with minor indications of Zn-related phases. Scanning electron microscope (SEM) studies revealed distinct morphological differences between the samples: flake-like grains for the nanopowder and cylindrical grain structures on the surface of thin film. X-ray photoelectron spectroscopy (XPS) analysis confirmed the elemental composition, displaying prominent binding energy peaks corresponding to Zn, Mn, and O. Electrochemical evaluations demonstrated that the ZnMn₃O₄ thin film exhibited enhanced performance, achieving a high specific capacitance of 401 F/g at a current density of 1 A/g, along with notable cycling stability, retaining 78% of its initial capacitance after 5000 charge–discharge cycles. These results highlight the potential of ZnMn₃O₄ thin films for high-performance supercapacitor applications.</p>

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Advanced ZnMn3O4 nanostructures synthesized by solution combustion and electron beam evaporation for supercapacitor electrodes

  • 期刊论文

  • 发表日期：

    2025年9月25日

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  • Dadamiah P M D Shaik,
  • Rosaiah Pitcheri,
  • Fatimah Ali M. Al-Zahrani,
  • Saikh Mohammad Wabaidur,
  • Ayman A. Ghfar,
  • P. Naresh Kumar Reddy,
  • D. Nagamalleswari

摘要

ZnMn₃O₄ nanoparticles were successfully synthesized using a simple solution combustion method and subsequently employed as target material for the fabrication of ZnMn₃O₄ thin films using the electron beam evaporation technique. Structural characterization through X-ray diffraction (XRD) and Raman spectroscopy confirmed the presence of characteristic ZnMn₃O₄ peaks, with minor indications of Zn-related phases. Scanning electron microscope (SEM) studies revealed distinct morphological differences between the samples: flake-like grains for the nanopowder and cylindrical grain structures on the surface of thin film. X-ray photoelectron spectroscopy (XPS) analysis confirmed the elemental composition, displaying prominent binding energy peaks corresponding to Zn, Mn, and O. Electrochemical evaluations demonstrated that the ZnMn₃O₄ thin film exhibited enhanced performance, achieving a high specific capacitance of 401 F/g at a current density of 1 A/g, along with notable cycling stability, retaining 78% of its initial capacitance after 5000 charge–discharge cycles. These results highlight the potential of ZnMn₃O₄ thin films for high-performance supercapacitor applications.