In-situ grown of FeCo2O4 @ 2D-Carbyne coated nickel foam - A newer nanohybrid electrode for high performance asymmetric supercapacitors
In-situ grown of FeCo2O4 @ 2D-Carbyne coated nickel foam - A newer nanohybrid electrode for high performance asymmetric supercapacitors
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DOI：
10.1016/j.est.2022.105943
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发表时间：
2022-11-07
影响因子：
9.4
通讯作者：
Angaiah, Subramania
中科院分区：
文献类型：
--
作者：
Dhandapani, Preethi;Balan, Balakrishnan;Angaiah, Subramania
在这项研究中，我们通过涂覆在泡沫镍上的简单化学路线合成了2D-碳炔。对于这种碳炔涂层泡沫镍，通过溶剂热工艺生长 FeCo2O4，作为非对称超级电容器应用的纳米混合电极。这种纳米混合电极由于表面积大、电导率高和改进的倍率特性而表现出高比电容。 FeCo2O4@Carbyne纳米杂化电极在3 Ag-1电流密度下的比电容约为2584.8 Fg(-1)。此外，使用FeCo2O4@Carbyne和活性炭组装的非对称超级电容器装置（FeCo2O4@Carbyne || AC）表现出更好的性能，在2.25 kW kg(-1)的高功率密度下能量密度约为93.12 Wh Kg(-1)，即使在5000次循环时电容衰减约为26%。这些成果为开发具有优越特性的不对称超级电容器提供了新方法。
In this study, we synthesized 2D-carbyne by a simple chemical route coated on nickel foam. To this carbyne coated nickel foam, FeCo2O4 was grown by the solvothermal process to serve as a nanohybrid electrode for asymmetric supercapacitor applications. This nanohybrid electrode has shown high specific capacitance due to the large surface area, high electrical conductivity and improved rate characteristics. The specific capacitance of FeCo2O4 @Carbyne nanohybrid electrode was about 2584.8 Fg(-1) at the current density of 3 Ag-1. Furthermore, the asymmetric supercapacitor device assembled using FeCo2O4@Carbyne and activated carbon (FeCo2O4@Carbyne || AC) shows better performance with an energy density of about 93.12 Wh Kg(-1) at a high-power density of 2.25 kW kg(-1) with a capacitance decay of approximately 26 % even at 5000 cycles. These outcomes provide a new approach for the development of asymmetric supercapacitors with superior characteristics.