The efficient generation of hydrogen through the electro-splitting of water has attracted great attention. To design highly efficient and low-cost electrocatalysts for the hydrogen evolution reaction (HER) to lower the overpotential and enhance the reaction rate is of great importance for electrochemical water splitting. However, the development of low-cost and efficient electrocatalysts for the hydrogen evolution reaction is still a major challenge. In this paper, we have fabricated NiSe@CoP nanowires with a core–shell structure array grown on nickel foam (NF), denoted as NiSe@CoP NWs/NF, via a low temperature phosphorization reaction. This 3D core–shell structure catalytic electrode provides synergistic effects, a large number of active sites, fast electron transport and enhanced electrochemical durability, resulting in a remarkable HER activity that delivers overpotentials of 91 mV and 73 mV at a current density of 10 mA cm⁻² in 1.0 M KOH and 0.5 M H₂SO₄, respectively. Notably, the NiSe@CoP NW/NF electrode shows excellent stability evaluated by 1000 potential cycles and operation with a high current density at a fixed potential for 12 h in 0.5 M H₂SO₄ and 1.0 M KOH, respectively.

中文翻译：

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镍泡沫上的NiSe @ CoP核壳纳米线阵列的原位合成，作为在碱性和酸性介质中产生电化学氢的高效耐用电极†

通过水的电分解有效地产生氢引起了极大的关注。设计用于氢气析出反应（HER）的高效，低成本的电催化剂，以降低过电位并提高反应速率，对电化学水分解非常重要。然而，开发用于氢释放反应的低成本和高效的电催化剂仍然是主要挑战。在本文中，我们通过以下方法制造了具有在镍泡沫（NF）上生长的核-壳结构阵列的NiSe @ CoP纳米线，称为NiSe @ CoP NWs / NF 。低温磷化反应。这种3D核-壳结构催化电极具有增效作用，大量的活性位点，快速的电子传输和增强的电化学耐久性，可实现卓越的HER活性，在10 mA cm的电流密度下可提供91 mV和73 mV的过电势^-1分别在1.0 M KOH和0.5 MH ₂ SO _4中。值得注意的是，NiSe @ CoP NW / NF电极显示出出色的稳定性，通过1000次电势循环评估，并在高电流密度下以固定电流在0.5 MH ₂ SO ₄和1.0 M KOH中连续运行12 h 。