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<p>Due to the low cost and abundant reserves of transition metals, there is an urgent imperative for the design and fabrication of transition metal electrocatalysts to expedite hydrogen production through the hydrogen evolution reaction (HER). We present a self-supported needle-grass-shaped Zn-Co (ZC) composition on porous nickel foam (NF) via conventional hydrothermal synthesis. The Zn-Co/NF electrodes demonstrate remarkably efficient HER performance in 1.0M KOH alkaline solution. Specifically, the ZC (1:4)/NF catalyst exhibits an overpotential of 171.9&#xa0;mV at a current density of 10&#xa0;mA&#xa0;cm<sup>−2</sup> owing to the synergistic effect arising from the combination of Zn-Co composition and Ni layers. Furthermore, stability tests demonstrate that the linear sweep voltammetry (LSV) curves of the ZC (1:4)/NF catalyst exhibits only marginal changes even after undergoing 1000 consecutive cycles at a scan rate of 20&#xa0;mV&#xa0;s<sup>−1</sup>. This study presents an innovative approach for the design and fabrication of highly efficient electrocatalysts for HER.</p> Graphical Abstract <p></p>

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Zn-Co Needle-Grass-Shaped Nanostructure In Situ-Grown on Porous Nickle Foam As an Electrocatalyst for Efficient HER

  • 期刊论文

  • 发表日期：

    2025年4月21日

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  • Linfeng Xiao,
  • Xinyue Wang,
  • Lichun Fu,
  • Wenqiang Deng,
  • Boyu Liang,
  • Runrun Li,
  • Yan Hong,
  • Jie Du,
  • Zhenyuan Zhou,
  • Runhua Liao

摘要

Due to the low cost and abundant reserves of transition metals, there is an urgent imperative for the design and fabrication of transition metal electrocatalysts to expedite hydrogen production through the hydrogen evolution reaction (HER). We present a self-supported needle-grass-shaped Zn-Co (ZC) composition on porous nickel foam (NF) via conventional hydrothermal synthesis. The Zn-Co/NF electrodes demonstrate remarkably efficient HER performance in 1.0M KOH alkaline solution. Specifically, the ZC (1:4)/NF catalyst exhibits an overpotential of 171.9 mV at a current density of 10 mA cm−2 owing to the synergistic effect arising from the combination of Zn-Co composition and Ni layers. Furthermore, stability tests demonstrate that the linear sweep voltammetry (LSV) curves of the ZC (1:4)/NF catalyst exhibits only marginal changes even after undergoing 1000 consecutive cycles at a scan rate of 20 mV s−1. This study presents an innovative approach for the design and fabrication of highly efficient electrocatalysts for HER.

Graphical Abstract