Rational design and fabrication of electrocatalysts with low-cost and high efficiency is highly desired. In this paper, a hierarchical honey-comb catalyst NiSP supported on nickel foam (NF) was synthesized by a facile gradient electrodeposition method. Attributed to the presence of Ni₂P and NiS and the synergistic effect among phosphide and sulphide, NiSP /NF catalyst exhibited a low overpotential value of 281 mV to achieve 10 mA cm⁻² and the Tafel value of 68.51 mV dec⁻¹ in 1 M KOH. Benefited from the gradient electrodeposition process resulting in the nanoparticles decorate honey-comb structure, the electrochemical active surface area reaches to 3571.5 cm², and the turnover frequency (TOF) value is 2.0781 s⁻¹. Due to the good electric conductivity of phosphide and sulphide, NiSP /NF electrode kept to exhibit excellent stability for 60 h. Therefore, the electrode obtained by our gradient electrodeposition method was expected to be a promising candidate catalyst.

非常需要合理设计和制造低成本、高效率的电催化剂。在本文中，通过简便的梯度电沉积方法合成了负载在镍泡沫 (NF) 上的分级蜂窝状催化剂 NiSP。由于Ni ₂ P和NiS的存在以及磷化物和硫化物之间的协同作用，NiSP /NF催化剂表现出281 mV的低过电位值以实现10 mA cm ^-2和68.51 mV dec ^-1 in 1的Tafel值M KOH。受益于梯度电沉积过程，纳米粒子装饰蜂窝结构，电化学活性表面积达到3571.5 cm ²，周转频率（TOF）值为2.0781 s ^-1. 由于磷化物和硫化物的良好导电性，NiSP /NF 电极在 60 小时内保持表现出优异的稳定性。因此，通过我们的梯度电沉积方法获得的电极有望成为一种有前途的候选催化剂。