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<p>The development of highly efficient non-precious metal catalysts for the hydrogen evolution reaction (HER) that can maintain stability at elevated current densities remains a significant challenge in advancing the industrialization of hydrogen production via water splitting. In this study, we successfully constructed a metal-organic framework (MOF)-derived nitrogen-doped CoO/Ni₂P three-dimensional self-supporting electrode on nickel foam (NF) using a hydrothermal phosphating strategy. This architecture leverages the three-dimensional framework of NF to mitigate the structural collapse of MOF materials during high-temperature heat treatment and to establish an effective conductive network. Structural characterization reveals that the three-dimensional porous channels of the electrode fully expose the active sites, while the synergistic effects of nitrogen doping and CoO/Ni₂P optimize the electronic structure of the Co active center, thereby significantly enhancing intrinsic activity. In a 1.0&#xa0;mol/L KOH electrolyte, this electrode requires an exceptionally low potential of 39 mV and 187 mV to achieve current densities of 10&#xa0;mA cm<sup>− 2</sup> and 650&#xa0;mA cm<sup>− 2</sup>, respectively, and it can operate stably for over 24&#xa0;h at a high current of 650&#xa0;mA cm<sup>− 2</sup> with negligible performance degradation. This study offers novel insights for the design of HER catalysts suitable for industrial applications.</p> Graphical Abstract

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The Highly Efficient Hydrogen Evolution Performance of MOF-Derived Nitrogen-Doped CoO/Ni2P/NF Electrodes

  • 期刊论文

  • 发表日期：

    2026年1月24日

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  • Haixiang Wang,
  • Haibo Wang,
  • Qingzhu Sun,
  • Qirong Li,
  • Xiangdong Liu,
  • Lei Xing,
  • Sijia Guo,
  • Yongchang Zhu,
  • Zhixin Wan,
  • Hao Luan,
  • Tao Tang,
  • Xiaorang Guo

摘要

The development of highly efficient non-precious metal catalysts for the hydrogen evolution reaction (HER) that can maintain stability at elevated current densities remains a significant challenge in advancing the industrialization of hydrogen production via water splitting. In this study, we successfully constructed a metal-organic framework (MOF)-derived nitrogen-doped CoO/Ni₂P three-dimensional self-supporting electrode on nickel foam (NF) using a hydrothermal phosphating strategy. This architecture leverages the three-dimensional framework of NF to mitigate the structural collapse of MOF materials during high-temperature heat treatment and to establish an effective conductive network. Structural characterization reveals that the three-dimensional porous channels of the electrode fully expose the active sites, while the synergistic effects of nitrogen doping and CoO/Ni₂P optimize the electronic structure of the Co active center, thereby significantly enhancing intrinsic activity. In a 1.0 mol/L KOH electrolyte, this electrode requires an exceptionally low potential of 39 mV and 187 mV to achieve current densities of 10 mA cm− 2 and 650 mA cm− 2, respectively, and it can operate stably for over 24 h at a high current of 650 mA cm− 2 with negligible performance degradation. This study offers novel insights for the design of HER catalysts suitable for industrial applications.

Graphical Abstract