Hydrogen evolution reaction (HER) is considered to be one of the most important electrochemical reactions from both fundamental and application perspective to produce hydrogen. Polyacrylonitrile (PAN) based carbon (C)@NiO/Ni nanofibers were fabricated via simple electrospinning method. The as-prepared [email protected]/Ni nanofibers were characterized by scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), scanning electron microscopy Energy Dispersive X-ray Spectroscopy (SEM-EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and Raman spectra. The SEM and TEM analyses revealed that NiO/Ni nanoparticles distributed on the PAN based carbon nanofibers. EDS, XPS and XRD results confirm the presence of the nanoparticles. The catalytic activity and durability of [email protected]/Ni nanofibers containing different weight ratio of Ni salt content (2%, 3%, & 4%) were examined for HER in 1 M KOH solution. It has been observed that [email protected]/Ni nanofibers containing Ni content (4%) showed the highest catalytic activity. It indicates that the catalytic activity of electrocatalyst can be enhanced by increasing the effective active sites. Noteworthy to mention here that the nanofibers catalyst reached a current density of 60 mA/cm². The as-prepared catalyst showed remarkable stability up to 22 h and retained 99% of its initial activity even after 16 h of reaction.

从基本和应用的角度看，氢气生成反应（HER）被认为是最重要的电化学反应之一。通过简单的静电纺丝法制备了聚丙烯腈（PAN）基碳（C）@ NiO / Ni纳米纤维。在作为制备的[受电子邮件保护的] / Ni纳米纤维的特征在于扫描电子显微镜（SEM），高分辨率透射电子显微镜（HRTEM），扫描电子显微镜能量色散X射线能谱（SEM-EDS），X射线光电子能谱（XPS） ），X射线衍射（XRD）和拉曼光谱。SEM和TEM分析表明，NiO / Ni纳米颗粒分布在PAN基碳纳米纤维上。EDS，XPS和XRD结果证实了纳米颗粒的存在。在1 M KOH溶液中检查了含有不同重量比的Ni盐含量（2％，3％和4％）的[电子邮件保护] / Ni纳米纤维的催化活性和耐久性。已经观察到，含有Ni含量（4％）的[电子邮件保护的] / Ni纳米纤维显示出最高的催化活性。这表明可以通过增加有效活性位点来增强电催化剂的催化活性。这里值得一提的是，纳米纤维催化剂的电流密度达到60 mA / cm²。所制备的催化剂甚至在反应16小时后，在22小时内仍显示出显着的稳定性，并保留了其初始活性的99％。