The fabrication of an efficient electro-catalyst, made of non-precious metals, for oxygen evolution reaction (OER) is an exciting task. A simple cathodic deposition followed by electrochemical anodic activation has been proposed to prepare a potential electro-catalyst, amorphous nickel oxyhydroxide, on a stainless steel (SS) substrate wherein the whole fabrication procedure completes within a minute. The proposed protocol demonstrates good electrical contact between loosely packed amorphous nickel oxyhydroxide and SS substrate. The experimental results demonstrate cathodic deposition time significantly affect interfacial charge transfer resistance and in turn OER performance. Electrochemical results reveal OER proceeds through the formation of NiO₂ intermediate. The amorphous nickel oxyhydroxide@SS fabricated using cathodic deposition time of 40 s followed by anodic activation of 15 s display the low overpotential of 330 mV@25 mA cm⁻² (1.56 V vs. RHE) with long-term stability over 70 h.

由非贵金属制成的用于氧释放反应（OER）的高效电催化剂的制造是一项令人兴奋的任务。已经提出了简单的阴极沉积，然后进行电化学阳极活化，以在不锈钢（SS）基底上制备潜在的电催化剂无定形羟基氧化镍，其中整个制造过程在一分钟内完成。拟议的协议证明了松散堆积的无定形羟基氧化镍与SS衬底之间的良好电接触。实验结果表明，阴极沉积时间会显着影响界面电荷转移阻力，进而影响OER性能。电化学结果表明OER通过形成NiO _2进行中间。使用40 s的阴极沉积时间然后15 s的阳极活化制备的非晶态羟基氧化镍@SS显示出330 mV @ 25 mA cm ^-2的低过电势（相对于RHE为1.56 V），在70小时内具有长期稳定性。