Ni-Co alloy of flowered like structure is successfully electrodeposited from neutral aqueous solutions of NiCl₂ and CoCl₂ salts as precursors at room temperature. The prepared alloy at our optimized conditions has a high protection effect from the electrochemical corrosion of steel in the hydrochloric acid solution. The electrochemically deposited alloys are examined via X-ray diffraction (XRD) giving two main phases of (fcc) and (hcp). The morphology is investigated via scanning electron microscope (SEM) showing flowered like structure for the alloy that is electrodeposited at -1.0 V only. The obtained data of the potentiodynamic polarization (PDP) and spectroscopy of electrochemical impedance (EIS) demonstrates that Ni-Co coatings have high stability in the highly corrosive media, especially the alloy of the flowered like structure. This alloy of unique properties is subjected to be an efficacious electrocatalyst for the reaction of hydrogen evolution (HER) in HCl solution.

从中性的NiCl ₂和CoCl ₂水溶液中成功沉积了具有花状结构的Ni-Co合金盐在室温下作为前体。在我们优化的条件下制备的合金对钢在盐酸溶液中的电化学腐蚀具有很高的保护作用。通过X射线衍射（XRD）检查电化学沉积的合金，得到（fcc）和（hcp）两个主要相。通过扫描电子显微镜（SEM）研究形态，显示仅在-1.0 V电沉积的合金的花状结构。电位动力学极化（PDP）和电化学阻抗谱（EIS）的数据表明，Ni-Co涂层在高腐蚀性介质（尤其是花状结构的合金）中具有很高的稳定性。