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<p>Nickel vanadium oxide (NiV<sub>2</sub>O<sub>6</sub>) nanoparticles were synthesized by rheological phase reaction (RPR) and characterized by XRD, XPS, SEM and TEM. Employing the two-electrode set up, the electrochemical response of NiV<sub>2</sub>O<sub>6</sub> was examined in the electrolytic solutions viz.,1.0 M H<sub>2</sub>SO<sub>4</sub>, 1.0&#xa0;M KOH and 1.0&#xa0;M Na<sub>2</sub>SO<sub>4</sub>. The NiV<sub>2</sub>O<sub>6</sub> electrode showed a capacitance of 324 Fg<sup>− 1</sup> at a current density of 0.5 Ag<sup>− 1</sup>. The electrode demonstrated a significant cycle stability in 1.0 M H<sub>2</sub>SO<sub>4</sub> electrolyte compared to that in other electrolytes. After 7000 cycles, the electrode retained 97.99% of its capacitance with an energy density of 10.12 Whkg<sup>− 1</sup> and a power density of 346.97 Wkg<sup>− 1</sup>. These notable electrochemical properties of NiV<sub>2</sub>O<sub>6</sub> revealed that it could be considered as a potential electrode material for aqueous supercapacitors.</p> Graphical Abstract

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Effect of aqueous electrolytes on NiV2O6 electrode material for improved supercapacitor performance

  • 期刊论文

  • 发表日期：

    2025年10月11日

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  • Naveenkumar P. Agadi,
  • Vijaykumar Chollety,
  • J. Seetharamappa

摘要

Nickel vanadium oxide (NiV2O6) nanoparticles were synthesized by rheological phase reaction (RPR) and characterized by XRD, XPS, SEM and TEM. Employing the two-electrode set up, the electrochemical response of NiV2O6 was examined in the electrolytic solutions viz.,1.0 M H2SO4, 1.0 M KOH and 1.0 M Na2SO4. The NiV2O6 electrode showed a capacitance of 324 Fg− 1 at a current density of 0.5 Ag− 1. The electrode demonstrated a significant cycle stability in 1.0 M H2SO4 electrolyte compared to that in other electrolytes. After 7000 cycles, the electrode retained 97.99% of its capacitance with an energy density of 10.12 Whkg− 1 and a power density of 346.97 Wkg− 1. These notable electrochemical properties of NiV2O6 revealed that it could be considered as a potential electrode material for aqueous supercapacitors.

Graphical Abstract