Zhang Xiang
Department of Energy and Power Engineering, North University of China, Taiyuan 038507, China.
Nanomaterials (Basel). 2024 Dec 27;15(1):29. doi: 10.3390/nano15010029.
The NiCoO Nanosheets@Carbon fibers composites have been successfully synthesized by a facile co-electrodeposition process. The mesoporous NiCoO nanosheets aligned vertically on the surface of carbon fibers and crosslinked with each other, producing loosely porous nanostructures. These hybrid composite electrodes exhibit high specific capacitance in a three-electrode cell. The asymmetric supercapacitor (NiCoO Nanosheets@Carbon fibers//Graphene oxide) displayed a high specific capacitance of 91 F g and excellent cycling stability with a capacitance retention of 94.5% at 5 A g after 10,000 cycles. The device also achieved a notable energy density of 52 Wh kg coupled with a power density of 3.5 kW kg and a high power density of 7.1 kW kg with an energy density of 21 Wh kg. This study shed light on the great potential of this asymmetric device as future supercapacitor.
通过简便的共电沉积工艺成功合成了NiCoO纳米片@碳纤维复合材料。介孔NiCoO纳米片垂直排列在碳纤维表面并相互交联，形成疏松多孔的纳米结构。这些混合复合电极在三电极电池中表现出高比电容。不对称超级电容器（NiCoO纳米片@碳纤维//氧化石墨烯）显示出91 F/g的高比电容和优异的循环稳定性，在10000次循环后，在5 A/g的电流密度下电容保持率为94.5%。该器件还实现了52 Wh/kg的显著能量密度，以及3.5 kW/kg的功率密度和7.1 kW/kg的高功率密度（能量密度为21 Wh/kg）。这项研究揭示了这种不对称器件作为未来超级电容器的巨大潜力。
