Hassanpoor Shahed, Aghely Farzaneh
Department of Nanotechnology, Faculty of Engineering, University of Guilan Rasht Iran
RSC Adv. 2020 Sep 23;10(58):35235-35244. doi: 10.1039/d0ra07620a. eCollection 2020 Sep 21.
In this study, 3D hierarchically self-assembled NiCoO nanopins were synthesized by a morphology controlled hydrothermal method. Structure, morphology, and composition of the samples were investigated using FT-IR, XRD, EDS, and SEM methods. Electrochemical tests such as cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD) studies were done in a three-electrode system with 1.0 M NaSO solution as the electrolyte for the supercapacitive study of the samples on a carbon paste electrode for the first time. The results confirmed the high-performance supercapacitive behavior of the dense nanostructure and acceptable stability during the charge-discharge cycle. The specific capacitance for the dense self-organized nanopins was calculated using a galvanostatic charge/discharge experiment which gave 2168 F g at a current density of 5 A g.
在本研究中，通过形貌控制水热法合成了三维分层自组装的NiCoO纳米针。使用傅里叶变换红外光谱（FT-IR）、X射线衍射（XRD）、能谱分析（EDS）和扫描电子显微镜（SEM）方法对样品的结构、形貌和组成进行了研究。首次在三电极体系中，以1.0 M NaSO溶液为电解质，在碳糊电极上对样品进行超级电容研究，进行了循环伏安法（CV）和恒电流充放电（GCD）等电化学测试。结果证实了致密纳米结构具有高性能的超级电容行为，并且在充放电循环过程中具有可接受的稳定性。通过恒电流充放电实验计算出致密自组装纳米针的比电容，在电流密度为5 A g时为2168 F g。
