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<p>The rational design of bifunctional catalysts is an effective strategy for realizing large-scale water splitting for hydrogen production. Herein, we fabricated CoFe/CoMoP/NF catalyst via a two-step electro-deposition, the unique interlaced nanosheet structure of which with a larger electrochemical active area and faster electron transfer capability enhanced the efficiency of the oxygen evolution reaction (OER) and stability of catalysts. The overpotential of the synthesized CoFe/CoMoP/NF was 214&#xa0;mV for OER at current density of 10&#xa0;mA&#xa0;cm<sup>−2</sup>. When CoFe/CoMoP/NF was served as both the cathode and anode, the system could provide a current density of 10&#xa0;mA&#xa0;cm<sup>−2</sup> at a low cell voltage of 1.52&#xa0;V with the stability of 300&#xa0;h. This work will be beneficial for designing effective electrocatalysts for overall water splitting.</p> Graphical Abstract <p>The overall water splitting system CoFe/CoMoP/NF||CoFe/CoMoP/NF only needs a small cell voltage of 1.52&#xa0;V to drive 10&#xa0;mA&#xa0;cm<sup>−2</sup> in 1&#xa0;M KOH with 300-h stability.</p>

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Fabrication of CoFe/CoMoP/NF catalyst for effective oxygen evolution reaction

  • 期刊论文

  • 发表日期：

    2025年5月31日

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  • Xiaoyu Zhu,
  • Yanfei Ha,
  • Zan Xu,
  • Danhua Xu,
  • Xuanye Chen,
  • Junwen Tao,
  • Tao Zhou

摘要

The rational design of bifunctional catalysts is an effective strategy for realizing large-scale water splitting for hydrogen production. Herein, we fabricated CoFe/CoMoP/NF catalyst via a two-step electro-deposition, the unique interlaced nanosheet structure of which with a larger electrochemical active area and faster electron transfer capability enhanced the efficiency of the oxygen evolution reaction (OER) and stability of catalysts. The overpotential of the synthesized CoFe/CoMoP/NF was 214 mV for OER at current density of 10 mA cm−2. When CoFe/CoMoP/NF was served as both the cathode and anode, the system could provide a current density of 10 mA cm−2 at a low cell voltage of 1.52 V with the stability of 300 h. This work will be beneficial for designing effective electrocatalysts for overall water splitting.

Graphical Abstract

The overall water splitting system CoFe/CoMoP/NF||CoFe/CoMoP/NF only needs a small cell voltage of 1.52 V to drive 10 mA cm−2 in 1 M KOH with 300-h stability.