Nickel modified titanium dioxide nanotubes (TiO₂-NTs/Ni) and TiO₂-NTs electrodes are investigated for hydrogen evolution reaction (HER). To obtain large surface area, TiO₂-NTs are prepared by using anodization method at a constant voltage of 60 V for various anodization times (30 min, 1 h and 2 h). Small amount of Ni is successfully deposited over TiO₂-NTs via electrodeposition method. Hydrogen evolution activities of TiO₂-NTs/Ni and TiO₂-NTs are investigated in 1 M KOH solution at room temperature. Characterizations of prepared nano-structured electrodes are analyzed with scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and cyclic voltammetry (CV) and electrochemical-activities are determined through cathodic current-potential curves and electrochemical impedance spectroscopy (EIS). Hydrogen volumes produced from prepared electrodes are also measured under constant voltage of 3 V for 30 min. Obtained results showed that hydrogen evolution activity increased with the modification of TiO₂-NTs by nickel. High current density at specific overpotentials, hydrogen volume and small polarization resistance are obtained on TiO₂-NTs/Ni. High stability and durability are also obtained on this electrode. So, TiO₂-NTs/Ni as an electrocatalyst is suggested to use in water electrolysis systems.

研究了镍改性的二氧化钛纳米管（TiO ₂ -NTs / Ni）和TiO ₂ -NTs电极的析氢反应（HER）。为了获得较大的表面积，通过使用阳极氧化方法在60 V的恒定电压下进行各种阳极氧化时间（30分钟，1小时和2小时）来制备TiO ₂ -NT。通过电沉积方法成功地将少量Ni沉积在TiO ₂ -NTs上。TiO ₂ -NTs / Ni和TiO _2的析氢活性-NTs在室温下于1 M KOH溶液中研究。使用扫描电子显微镜（SEM），能量色散X射线光谱仪（EDX），X射线衍射（XRD）和循环伏安法（CV）分析制备的纳米结构电极的特性，并通过阴极电流测定电化学活性。电势曲线和电化学阻抗谱（EIS）。在3 V的恒定电压下30分钟，还测量了由准备好的电极产生的氢气量。所得结果表明，随着镍对TiO ₂ -NTs的改性，析氢活性增加。在TiO ₂上获得了特定超电势下的高电流密度，氢气量和小的极化电阻-NTs / Ni。在该电极上也获得了高稳定性和耐久性。因此，建议在水电解系统中使用TiO ₂ -NTs / Ni作为电催化剂。