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<p>The hydrothermal method was utilized to produce micro hexagons of vanadium pentoxide (V<sub>2</sub>O<sub>5</sub>). In this experiment, the concentration of vanadium precursor was gradually increased from 0.08 to 0.14&#xa0;M. Various methodologies were employed to characterize the synthesized structures. The crystallite size and other microstructural parameters were acquired by refinement using Profex software. TEM detects the presence of thicker micro-hexagonal formations. Scanning electron microscopy (SEM) was utilized to study the morphological properties of the materials produced. Micro hexagons were clearly seen. The surface area and porosity of the synthesized microstructure were assessed with the Brunauer–Emmett–Teller (BET) technique. The BET study showed a porous structure with a surface area of 43.37 m<sup>2</sup>g<sup>−1</sup>. The presence of vanadium and oxygen was established by energy dispersive spectroscopy (EDS). The presence of vanadium is confirmed by XPS, which shows peaks at 516 and 524&#xa0;eV for V2p<sub>3/2</sub> and V2p<sub>1/2</sub>, respectively. A thorough electrochemical investigation was conducted. Specific capacitance and energy density fluctuate with current density from 186 to 37 F/g and 25.92 to 5.14 Wh/kg, respectively, and are inversely proportional to precursor concentration. The EIS and Bode plots were thoroughly explored with an equivalent circuit. The concentration of the precursor affects both solution resistance and charge transfer resistance. The two-electrode arrangement exhibits low charge transfer resistance and efficient ion diffusion. The stability investigation shows an increase in interfacial resistance and surface roughness. Hydrothermally produced-hexagonal V₂O₅ structures with variable electrochemical characteristics. Lower precursor concentrations lead to higher specific capacitance and energy density. These structures show promise for high-performance energy storage applications, particularly in supercapacitors that have improved ion diffusion and stability.</p>

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Synthesis of vanadium pentoxide (V2O5) micro hexagons for supercapacitor application using hydrothermal method

  • 期刊论文

  • 发表日期：

    2025年11月4日

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  • Rupin Ranu,
  • Swapnil R. Bhosale,
  • Sachin V. Desarada,
  • M. A. Yewale,
  • S. L. Kadam,
  • Kalyan B. Chavan,
  • Nandu B. Chaure

摘要

The hydrothermal method was utilized to produce micro hexagons of vanadium pentoxide (V2O5). In this experiment, the concentration of vanadium precursor was gradually increased from 0.08 to 0.14 M. Various methodologies were employed to characterize the synthesized structures. The crystallite size and other microstructural parameters were acquired by refinement using Profex software. TEM detects the presence of thicker micro-hexagonal formations. Scanning electron microscopy (SEM) was utilized to study the morphological properties of the materials produced. Micro hexagons were clearly seen. The surface area and porosity of the synthesized microstructure were assessed with the Brunauer–Emmett–Teller (BET) technique. The BET study showed a porous structure with a surface area of 43.37 m2g−1. The presence of vanadium and oxygen was established by energy dispersive spectroscopy (EDS). The presence of vanadium is confirmed by XPS, which shows peaks at 516 and 524 eV for V2p3/2 and V2p1/2, respectively. A thorough electrochemical investigation was conducted. Specific capacitance and energy density fluctuate with current density from 186 to 37 F/g and 25.92 to 5.14 Wh/kg, respectively, and are inversely proportional to precursor concentration. The EIS and Bode plots were thoroughly explored with an equivalent circuit. The concentration of the precursor affects both solution resistance and charge transfer resistance. The two-electrode arrangement exhibits low charge transfer resistance and efficient ion diffusion. The stability investigation shows an increase in interfacial resistance and surface roughness. Hydrothermally produced-hexagonal V₂O₅ structures with variable electrochemical characteristics. Lower precursor concentrations lead to higher specific capacitance and energy density. These structures show promise for high-performance energy storage applications, particularly in supercapacitors that have improved ion diffusion and stability.