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<p>The development of efficient and stable non-precious metal electrocatalysts is crucial for sustainable hydrogen production via water electrolysis. To address the common limitations of metal-organic frameworks (MOFs), such as poor conductivity and stability, we designed and synthesized a bimetallic cobalt-iron MOF (CoFe-MOF). Electrochemical tests reveal its exceptional bifunctional activity, requiring low overpotentials of 106 mV for the hydrogen evolution reaction (HER) and 202 mV for the oxygen evolution reaction (OER) at 10&#xa0;mA cm⁻². Furthermore, an electrolyzer employing CoFe-MOF as both anode and cathode achieves overall water splitting with a cell voltage of only 1.42&#xa0;V at 10&#xa0;mA cm⁻². These results demonstrate that bimetallic doping endows MOFs with superior catalytic performance and stability, positioning CoFe-MOF as a promising candidate for practical green hydrogen generation. </p> Graphical Abstract <p></p>

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Bimetallic Doping Co-MOF Research on the Performance of Electrocatalytic Water Splitting

  • 期刊论文

  • 发表日期：

    2026年2月9日

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  • Junling Chen,
  • Li Liu,
  • Qiaonan Yu,
  • Xin Wang,
  • Bowen Guo,
  • Shuo Zhang,
  • Chuanjin Gu,
  • Mengru Hao,
  • Heng Zhang,
  • Keliang Wu

摘要

The development of efficient and stable non-precious metal electrocatalysts is crucial for sustainable hydrogen production via water electrolysis. To address the common limitations of metal-organic frameworks (MOFs), such as poor conductivity and stability, we designed and synthesized a bimetallic cobalt-iron MOF (CoFe-MOF). Electrochemical tests reveal its exceptional bifunctional activity, requiring low overpotentials of 106 mV for the hydrogen evolution reaction (HER) and 202 mV for the oxygen evolution reaction (OER) at 10 mA cm⁻². Furthermore, an electrolyzer employing CoFe-MOF as both anode and cathode achieves overall water splitting with a cell voltage of only 1.42 V at 10 mA cm⁻². These results demonstrate that bimetallic doping endows MOFs with superior catalytic performance and stability, positioning CoFe-MOF as a promising candidate for practical green hydrogen generation.

Graphical Abstract