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Hierarchically self-assembled NiCo2O4 nanopins as a high-performance supercapacitor cathodic material: a morphology controlled study
RSC Advances ( IF 3.9 ) Pub Date : 2020-9-23 , DOI: 10.1039/d0ra07620a
Shahed Hassanpoor 1 , Farzaneh Aghely 1
Affiliation  

In this study, 3D hierarchically self-assembled NiCo2O4 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 Na2SO4 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−1 at a current density of 5 A g−1.

中文翻译:

分层自组装 NiCo2O4 纳米针作为高性能超级电容器阴极材料:形态控制研究

在这项研究中,通过形态控制的水热法合成了3D 分级自组装NiCo 2 O 4纳米针。使用 FT-IR、XRD、EDS 和 SEM 方法研究了样品的结构、形貌和组成。循环伏安法 (CV) 和恒电流充电/放电 (GCD) 研究等电化学测试是在具有 1.0 M Na 2 SO 4的三电极系统中进行的首次将溶液作为电解质用于碳糊电极上样品的超级电容研究。结果证实了致密纳米结构的高性能超级电容行为和充放电循环期间可接受的稳定性。使用恒电流充电/放电实验计算致密自组织纳米针的比电容,该实验在 5 A g -1 的电流密度下得到 2168 F g -1
更新日期:2020-09-23
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