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<p>In this study, an optically active iron(II)-terpyridine complex (<b>Fe-pt</b>) has been successfully prepared and characterized by different physicochemical methods. Its electrocatalytic performance for the oxygen evolution reaction (OER) was assessed by immobilizing <b>Fe-pt</b> onto Ni-foam electrodes. The system exhibited an overpotential of ~ 270&#xa0;mV at 10&#xa0;mA&#xa0;cm⁻<sup>2</sup>, demonstrating excellent catalytic efficiency under alkaline conditions. Cyclic voltammetry (CV) and chronopotentiometry, confirmed its remarkable stability and OER activity. Structural and spectroscopic analyses revealed that the Ni-foam substrate enhances electron transport and provides robust support, further boosting the catalytic performance. Additionally a strong correlation could be observed between theoretical predictions and experimentally obtained structural and spectral changes during the catalytic process. This study highlights the potential of mononuclear <b>Fe-pt</b> complex as durable electrocatalyst for OER applications.</p> Graphical Abstract <p></p>

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Iron(II)-Terpyridine Complex as a Single-Atom Electrocatalyst for Enhanced Oxygen Electrocatalysis: Experimental and Theoretical Insights

  • 期刊论文

  • 发表日期：

    2025年7月14日

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  • Amit Chauhan,
  • Bhagirath Saini,
  • Alok Kumar Singh,
  • Surya Prakash Rai,
  • Sushil Kumar,
  • Shivangi Singh,
  • Rajesh K. Yadav,
  • U. N. Tripathi,
  • Sumit Kumar,
  • Navneet Kumar Gupta

摘要

In this study, an optically active iron(II)-terpyridine complex (Fe-pt) has been successfully prepared and characterized by different physicochemical methods. Its electrocatalytic performance for the oxygen evolution reaction (OER) was assessed by immobilizing Fe-pt onto Ni-foam electrodes. The system exhibited an overpotential of ~ 270 mV at 10 mA cm⁻2, demonstrating excellent catalytic efficiency under alkaline conditions. Cyclic voltammetry (CV) and chronopotentiometry, confirmed its remarkable stability and OER activity. Structural and spectroscopic analyses revealed that the Ni-foam substrate enhances electron transport and provides robust support, further boosting the catalytic performance. Additionally a strong correlation could be observed between theoretical predictions and experimentally obtained structural and spectral changes during the catalytic process. This study highlights the potential of mononuclear Fe-pt complex as durable electrocatalyst for OER applications.

Graphical Abstract