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<p>Zinc ferrite (ZnFe<sub>2</sub>O<sub>4</sub>) nanostructures with diverse morphologies were successfully synthesised via an autoclave-assisted route by varying synthesis conditions under a fixed precursor composition. The influence of different structure-directing agents on the morphology of ZnFe<sub>2</sub>O<sub>4</sub> was investigated in detail. Structural confirmation was obtained through X-ray diffraction (XRD), while morphological evolution was characterised by scanning electron microscopy (SEM). Electrochemical performance was assessed using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) analysis. Among the prepared samples, ZnFe<sub>2</sub>O<sub>4</sub> prepared with the assistance of oxalic acid exhibited a well-aligned stacked rod-like morphology and delivered the highest specific capacitance of 385&#xa0;F/g within the potential window of 0 to 0.55&#xa0;V at 1&#xa0;A/g. The improved electrochemical performance of the stacked rod is due to its directional structure, which allows ions to move quickly and store charge efficiently. This study uniquely provides comparative insight into morphology control via hydrothermal versus solvothermal syntheses using identical precursors, establishing ZnFe<sub>2</sub>O<sub>4</sub> as a promising electrode for scalable, high-performance supercapacitor applications.</p> Graphical Abstract <p></p>

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Morphological Impact of Zinc Ferrite Oxide Nanostructures on Electrochemical Energy Storage: a Hydrothermal and Solvothermal Perspective

  • 期刊论文

  • 发表日期：

    2026年3月7日

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  • Nabeela Kader,
  • Arjun Kumar Bojarajan,
  • Sambasivam Sangaraju,
  • D. Vasanth Raj

摘要

Zinc ferrite (ZnFe2O4) nanostructures with diverse morphologies were successfully synthesised via an autoclave-assisted route by varying synthesis conditions under a fixed precursor composition. The influence of different structure-directing agents on the morphology of ZnFe2O4 was investigated in detail. Structural confirmation was obtained through X-ray diffraction (XRD), while morphological evolution was characterised by scanning electron microscopy (SEM). Electrochemical performance was assessed using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) analysis. Among the prepared samples, ZnFe2O4 prepared with the assistance of oxalic acid exhibited a well-aligned stacked rod-like morphology and delivered the highest specific capacitance of 385 F/g within the potential window of 0 to 0.55 V at 1 A/g. The improved electrochemical performance of the stacked rod is due to its directional structure, which allows ions to move quickly and store charge efficiently. This study uniquely provides comparative insight into morphology control via hydrothermal versus solvothermal syntheses using identical precursors, establishing ZnFe2O4 as a promising electrode for scalable, high-performance supercapacitor applications.

Graphical Abstract