The development of cheap and effective catalysts is one of the major challenges to boost up electrocatalytic oxygen evolution reaction (OER). In this study, we synthesized phosphorus incorporated nickel sulfide (Ni₃S₂@Ni₅P₄/NF) composite via a simple one-step hydrothermal treatment for electrocatalytic oxygen evolution reaction in basic media. The newly synthesized Ni₃S₂@Ni₅P₄/NF composite catalyst shows a remarkable OER activity with an overpotential of 399 mV at a current density of 50 mA cm⁻². Ni₃S₂@Ni₅P₄/NF also shows a Tafel slope of 75 mV dec^-1 with long-term stability for more than 15 h in alkaline media. The enhanced electrocatalytic activity of current system is among best catalysts based on Nickle sulfides and nickel phosphides according to our knowledge. Current enhancement can be attributed to fast electron transfer due to synergistic effect of Ni₃S₂ and Ni₅P₄ in the composite.

开发廉价有效的催化剂是促进电催化析氧反应 (OER) 的主要挑战之一。在这项研究中，我们通过简单的一步水热处理合成了磷结合的硫化镍（Ni ₃ S ₂ @Ni ₅ P ₄ /NF）复合材料，用于在碱性介质中进行电催化析氧反应。新合成的Ni ₃ S ₂ @Ni ₅ P ₄ /NF 复合催化剂显示出显着的OER 活性，在50 mA cm ^-2的电流密度下具有399 mV 的过电位。Ni ₃ S ₂ @Ni ₅ P ₄/NF 还显示了 75 mV dec ^-1的 Tafel 斜率，在碱性介质中具有超过 15 小时的长期稳定性。根据我们的知识，当前系统增强的电催化活性是基于硫化镍和磷化镍的最佳催化剂之一。由于复合材料中Ni ₃ S ₂和Ni ₅ P _{4 的}协同作用，电流增强可归因于快速电子转移。