期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 873, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.159801
关键词
CoAl-layered double hydroxide; Ni3S2; High specific capacitance; Electrodeposition; Asymmetric supercapacitor
In this study, three-dimensional hierarchical hybrid composites Ni3S2/CoAl-LDH/rGO were successfully fabricated, showing excellent electrochemical performance with high specific capacitance and cycling stability, indicating great potential as electrode materials for energy storage devices.
Three-dimensional hierarchical hybrid composites incorporating both CoAl-layered double hydroxide and Ni3S2 grown onto the framework of reduced graphene oxide (rGO) on Ni foam were successfully fabricated by hydrothermal procedure combined with electrodeposition method (Ni3S2/CoAl-LDH/rGO). The Ni3S2 nanoplates was anchored on the surface of the CoAl-LDH/rGO nanosheets, forming a cross linked core-shell structure. Electrochemical measurements demonstrate that the outer Ni3S2 layer can significantly influence the morphology and electrochemical properties of the hybrid electrodes. Benefiting from its attractive structural feature and strong synergy of multiple components, excellent results were obtained in the composite with the optimal mass loading of Ni3S2 layer, which exhibited an excellent specific capacitance of 2457.5 F g(-1) at 1 A g(-1) and a desirable cycling behavior of 90.0% retention over 5000 cycles. The assembled asymmetric supercapacitor using Ni3S2/CoAl-LDH/rGO as positive electrode and active carbon as negative electrode delivers a high energy density of 59.8 W h kg(-1) at a power density of 402.8 W kg(-1) and a good cycling property (91% capacitance retention after 8000 cycles). These encouraging results demonstrate that such hybrid nanostructure provides great potential as electrode material for the energy storage devices. (C) 2021 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据