ABSTRACT

In this work, first, VO-acetylacetonate coordination system with 2-(pyridin-4-ylmethylene) hydrazine-1-carbothioamide (VO(acac)₂L) was synthesised via sonochemical routes. Then POAP/VO(acac)₂L films were fabricated through electropolymerization of poly ortho aminophenol (POAP) in the presence of VO(acac)₂L and used as the active electrode of an electrochemical supercapacitor (SC) with a significant electrochemical properties improvement. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) was applied to characterise the structural state of the prepared samples. Also, some electrochemical methods such as electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and galvanostatic charge–discharge (GCD) were carried out for the system performance investigation. This work may open an avenue to develop efficient and robust nanocomposite materials for an energy storage device in an acidic medium.

摘要

在这项工作中，首先，通过声化学途径合成了带有2-（吡啶-4-基亚甲基）肼-1-甲硫酰胺（VO（acac）₂ L）的VO-乙酰丙酮酸酯配位体系。然后在VO（acac）₂存在下，通过聚邻氨基苯酚（POAP）的电聚合制备POAP / VO（acac）₂ L膜。L用作电化学超级电容器（SC）的活性电极，具有显着的电化学性能改善。X射线衍射（XRD）和场发射扫描电子显微镜（FESEM）用于表征所制备样品的结构状态。此外，还进行了一些电化学方法，例如电化学阻抗谱（EIS），循环伏安法（CV）和恒电流充放电（GCD）来进行系统性能研究。这项工作可能为开发用于酸性介质中储能装置的高效，坚固的纳米复合材料开辟道路。