Mesoporous NiO samples with different morphology were synthesized by hydrothermal method, and they were studied as electrocatalysts for oxygen evolution reaction in alkaline solution. The NiO samples were characterized by X-ray diffraction, transmission electron microscopy, N₂-adsorption, scanning electron microscopy and X-ray photoelectron spectroscopy. The critical synthesis parameters like hydrothermal reaction temperature, time and molar ratio of precursors were varied using Taguchi experimental method to investigate their effect on morphology and specific surface area of mesoporous NiO samples. The characterization data illustrated the formation of nanoplates, nanorods, and nanoparticles. All the NiO samples exhibited mesoporosity and the specific surface area values in the range of 88–156 m²/g. One of the synthesized mesoporous NiO samples, largely constituting of nanoplates and nanorods with high porosity, exhibited a Tafel slope of 62 mV/dec and achieved a current density of 41.6 mA/cm² at 1.6 V (vs. RHE). It showed better electrocatalytic activity for oxygen evolution reaction than remaining samples.

利用水热法合成了不同形貌的介孔NiO样品，并将其作为碱性溶液中氧气析出反应的电催化剂进行了研究。通过X射线衍射，透射电子显微镜，N ₂吸附，扫描电子显微镜和X射线光电子能谱对NiO样品进行表征。使用Taguchi实验方法改变了关键的合成参数，如水热反应温度，时间和前驱体的摩尔比，以研究其对介孔NiO样品的形貌和比表面积的影响。表征数据说明了纳米板，纳米棒和纳米颗粒的形成。所有的NiO样品均表现出介孔性，比表面积在88–156 m ²的范围内/G。一种合成的介孔NiO样品主要由具有高孔隙率的纳米板和纳米棒组成，其Tafel斜率为62 mV / dec，在1.6 V（vs. RHE）时达到41.6 mA / cm ²的电流密度。它显示出比其余样品更好的电催化活性。