Optimization, and analysis of carbon supported VS2 nanocomposites as potential electrodes in supercapacitors
Optimization, and analysis of carbon supported VS2 nanocomposites as potential electrodes in supercapacitors
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DOI：
10.1016/j.est.2019.101074
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发表时间：
2020-02-01
影响因子：
9.4
通讯作者：
Zingwe, Nyengerai
中科院分区：
文献类型：
--
作者：
Meyer, Edson;Bede, Asanda;Zingwe, Nyengerai
本文报道了碳负载二硫化钒纳米复合材料的水热合成和优化，该复合材料具有用作超级电容器电极的潜力。多壁碳纳米管优越的导电性与二硫化钒适度的电催化能力相结合，产生了一种协同作用，增强了有效的氧化还原电荷转移，从而产生了更大的电容。最佳电极的最小电荷转移电阻和峰间电位差分别为0.32 ω和0.15 mV，表明电荷转移相对较高，这是由于碳含量增加所带来的电导率提高。因此，确定最佳电极在1ma电流密度下的比电容为33fg（-1）。结果表明，碳负载的二硫化钒电极在超级电容器中具有潜在的应用前景。
The hydrothermal synthesis and optimization of carbon supported vanadium disulphide nanocomposites which could potentially be utilized as electrodes in supercapacitors is hereby reported. The superior electrical conductivity of multi walled carbon nanotubes coupled with the modest electrocatalytic capability of vanadium disulphide creates a synergy that enhances effective redox charge transfer leading to greater capacitance. Minimum charge transfer resistance and peak to peak potential difference for the optimum electrode, measured at 0.32 Omega and 0.15 mV respectively signified relatively higher charge transfer which was attributed to the greater electrical conductivity shored up by the increased carbon content. Thus, the optimum electrode was determined to have a specific capacitance of 33F.g(-1) at 1 mA current density. The results obtained show that the carbon supported vanadium disulphide electrodes could potentially be used in supercapacitors.