Amorphous Ni sulfoselenide on the surface of Ni(OH)₂ nanoplate that is supported by nickel foam is synthesized, which demonstrates high activity and durability for hydrogen evolution reaction (HER) and urea oxidation reaction (UOR) in alkaline media. As for HER, the introduction of sulfur in Ni sulfoselenide not only increases the electrochemical active area, but also improves the water adsorption ability and provides an optimal adsorption site for hydrogen atom. As for UOR, the in-situ formed amorphous oxyhydroxide is believed as the real active species. The electrolyzer assembled by Ni sulfoselenide electrodes shows a low voltage of 1.47 at 10 mA cm⁻² in 1 M KOH + 0.5 M urea, which is much lower than that required for overall water splitting. The present work demonstrates an effective bifunctional electrode for HER and UOR that can be used to produce hydrogen and remove pollutant (urea) in water at the same time.

合成了泡沫镍支撑的Ni（OH）₂纳米板表面无定形的镍磺酰亚硒酸酯，在碱性介质中表现出很高的活性和对氢发生反应（HER）和尿素氧化反应（UOR）的耐久性。对于HER，在硫代硒化镍中引入硫不仅增加了电化学活性面积，而且提高了水吸附能力，并为氢原子提供了最佳的吸附位。至于UOR，原位形成的无定形羟基氧化物被认为是真正的活性物质。由Ni硫代硒化镍电极组装的电解槽在10 mA cm ^-2处显示1.47的低电压1 M KOH + 0.5 M尿素中的水，远低于总水分解所需的尿素。本工作展示了一种用于HER和UOR的有效双功能电极，可用于同时产生氢气和去除水中的污染物（尿素）。