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<p>The development of an efficient electrocatalyst is significant to enhance the slow oxygen evolution reaction (OER) and stock electrical energy as H<sub>2</sub> fuel. Hence, the formation of a cost-effective process for an efficient OER electrocatalyst, distinguished by several active regions, large surface area (SA) and outstanding stability is crucial for improving hydrogen generation and its availability. This work displays the fabrication of neodymium-doped nickel vanadium oxide (Nd-Ni<sub>2</sub>V<sub>2</sub>O<sub>7</sub>) via a hydrothermal route. X-ray diffraction (XRD) study and Scanning electron microscopy (SEM) were employed to confirm the structural characteristics and morphological properties of fabricated materials. The Brunauer–Emmett–Teller (BET) results displayed that Nd-Ni<sub>2</sub>V<sub>2</sub>O<sub>7</sub> had specific surface area (SSA). The Nd-Ni<sub>2</sub>V<sub>2</sub>O<sub>7</sub> showed Tafel plot (39 mV/dec) with lower overpotential (η) of 211 mV at standard current density (C<sub>d</sub>) (10 mA/cm<sup>2</sup>). The Nd-Ni<sub>2</sub>V<sub>2</sub>O<sub>7</sub> displayed remarkable stability after the 3,000<sup>th</sup> cycle and reduced impedance characteristics (i.e.solution resistance (R<sub>s</sub>) of 0.32 Ω). The attained results displayed that addition of Nd dopant to Ni<sub>2</sub>V<sub>2</sub>O<sub>7</sub> enhanced the OER performance of the prepared pyrochlore. This research provides improved OER electrocatalysts and a wider understanding of relationship between pyrochlore’s structure and performance for more practical energy-generating devices.</p> Graphical Abstract <p></p>

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Investigation of electrochemical property by neodymium-doped nickel vanadium oxide

  • 期刊论文

  • 发表日期：

    2025年6月27日

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  • Arooj Fatima,
  • Soumaya Gouadria,
  • Arvind Yadav,
  • Jayanti Makasana,
  • Suhas Ballal,
  • Sachin Jaidka,
  • Piyus Kumar Pathak,
  • Rahul Raj Chaudhary,
  • Vijaya L. Mishra,
  • Abhinav Kumar

摘要

The development of an efficient electrocatalyst is significant to enhance the slow oxygen evolution reaction (OER) and stock electrical energy as H2 fuel. Hence, the formation of a cost-effective process for an efficient OER electrocatalyst, distinguished by several active regions, large surface area (SA) and outstanding stability is crucial for improving hydrogen generation and its availability. This work displays the fabrication of neodymium-doped nickel vanadium oxide (Nd-Ni2V2O7) via a hydrothermal route. X-ray diffraction (XRD) study and Scanning electron microscopy (SEM) were employed to confirm the structural characteristics and morphological properties of fabricated materials. The Brunauer–Emmett–Teller (BET) results displayed that Nd-Ni2V2O7 had specific surface area (SSA). The Nd-Ni2V2O7 showed Tafel plot (39 mV/dec) with lower overpotential (η) of 211 mV at standard current density (Cd) (10 mA/cm2). The Nd-Ni2V2O7 displayed remarkable stability after the 3,000th cycle and reduced impedance characteristics (i.e.solution resistance (Rs) of 0.32 Ω). The attained results displayed that addition of Nd dopant to Ni2V2O7 enhanced the OER performance of the prepared pyrochlore. This research provides improved OER electrocatalysts and a wider understanding of relationship between pyrochlore’s structure and performance for more practical energy-generating devices.

Graphical Abstract