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<p>Herein, we synthesized V<sub>2</sub>O<sub>5</sub> nanosheets combinedly with spherical ZnO particles considered as a high-performance supercapacitor electrode through a two-step hydrothermal and annealing process. Furthermore, the obtained V<sub>2</sub>O<sub>5</sub>/ZnO composite material was characterized via X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy, which was confirmed by various physicochemical techniques. In addition, the resultant electrodes were evaluated the charge storage performance through a three-electrode system in an aqueous electrolyte system. As a result, the resultant electrode exhibited the areal capacitance of 37.5 mF cm<sup>−2</sup> at the current density value of 1&#xa0;mA&#xa0;cm<sup>−2</sup> with 95% stability retention after 3000 cycles. The delivery of the capacitance, which enhances electrochemical performance and is derived from the different composite structure and work functions that take advantage of the synergetic effect to offer more electrochemically active spots and pathways, hence accelerating electron and ion transport.</p>

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Design and electrochemical studies of V2O5/ZnO nanocomposite electrodes for energy storage applications

  • 期刊论文

  • 发表日期：

    2025年9月12日

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  • S. Sathiya,
  • S. Durairaj,
  • S. Seenivasan,
  • M. Sasikumar

摘要

Herein, we synthesized V2O5 nanosheets combinedly with spherical ZnO particles considered as a high-performance supercapacitor electrode through a two-step hydrothermal and annealing process. Furthermore, the obtained V2O5/ZnO composite material was characterized via X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy, which was confirmed by various physicochemical techniques. In addition, the resultant electrodes were evaluated the charge storage performance through a three-electrode system in an aqueous electrolyte system. As a result, the resultant electrode exhibited the areal capacitance of 37.5 mF cm−2 at the current density value of 1 mA cm−2 with 95% stability retention after 3000 cycles. The delivery of the capacitance, which enhances electrochemical performance and is derived from the different composite structure and work functions that take advantage of the synergetic effect to offer more electrochemically active spots and pathways, hence accelerating electron and ion transport.