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<p>The urgent need to address the global energy crisis and transition to clean and affordable hydrogen-based energy requires effective electrocatalysts for water splitting. In this work, modified nickel ferrite nanoparticles embedded on reduced graphene oxide (NiFe<sub>2</sub>O<sub>4</sub>/rGO) composite were successfully prepared via one-step hydrothermal process. Afterward, the resultant composite was further electrodeposited on Fluorine-doped Tin oxide (FTO) glass electrode using polyvinylidene fluoride (PVDF) to form FTO-PVDF-NiFe<sub>2</sub>O<sub>4</sub>/rGO electrode. The measurements such as XRD, Raman spectroscopy, FTIR, SEM–EDX and UV–Visible spectroscopic confirmed the structural integrity of the prepared electrocatalysts with crystal-layered structure. The FTO-PVDF-NiFe<sub>2</sub>O<sub>4</sub>/rGO electrode exhibited exceptional OER performance which delivers current density of 10&#xa0;mA/cm<sup>2</sup> at overpotential of 135&#xa0;mV with Tafel slope of 67&#xa0;mV/dec. with a small Tafel slope of 67&#xa0;mV/dec. Moreover, it exhibited a high supercapacitance of 1052 F/g at 20&#xa0;mV/s scan rate. This enhanced electrocatalytic activity offers the potential for clean energy production and storage&#xa0;applications.</p> Graphical abstract <p></p>

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Electrocatalytic performance of modified NiFe2O4/rGO composite deposited on fluorine-doped tin oxide electrode using polyvinylidene fluoride binder

  • 期刊论文

  • 发表日期：

    2025年1月27日

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  • Nighat Javed,
  • Kiran Aftab,
  • Fakiha Tul Jannat,
  • Zumaira Siddique

摘要

The urgent need to address the global energy crisis and transition to clean and affordable hydrogen-based energy requires effective electrocatalysts for water splitting. In this work, modified nickel ferrite nanoparticles embedded on reduced graphene oxide (NiFe2O4/rGO) composite were successfully prepared via one-step hydrothermal process. Afterward, the resultant composite was further electrodeposited on Fluorine-doped Tin oxide (FTO) glass electrode using polyvinylidene fluoride (PVDF) to form FTO-PVDF-NiFe2O4/rGO electrode. The measurements such as XRD, Raman spectroscopy, FTIR, SEM–EDX and UV–Visible spectroscopic confirmed the structural integrity of the prepared electrocatalysts with crystal-layered structure. The FTO-PVDF-NiFe2O4/rGO electrode exhibited exceptional OER performance which delivers current density of 10 mA/cm2 at overpotential of 135 mV with Tafel slope of 67 mV/dec. with a small Tafel slope of 67 mV/dec. Moreover, it exhibited a high supercapacitance of 1052 F/g at 20 mV/s scan rate. This enhanced electrocatalytic activity offers the potential for clean energy production and storage applications.

Graphical abstract