Fabrication of interconnected 2D/3D NiS/Ni3S4 composites for high performance supercapacitor

•NiS/Ni3S4 composites with unique interconnected 2D/3D structure were fabricated.•3D hierarchical microspheres were anchored in the interconnected 2D nanosheets.•The composites exhibited high specific capacitance and excellent rate capability.•The composites exhibited outstanding cycling stability....

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Bibliographic Details
Published in:Materials letters 2019-08, Vol.248, p.1-4
Main Authors: Chen, TianHua, Liu, ZhiLin, Liu, ZhangSheng, Tao, XueYu, Fan, HeLiang, Guo, LiTong
Format: Article
Language:English
Subjects:
Capacitance
Electrode materials
Energy storage and conversion
Materials science
Microspheres
Microstructure
NiS/Ni3S4
Supercapacitor
Supercapacitors
Three dimensional composites
Two dimensional composites
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Summary:•NiS/Ni3S4 composites with unique interconnected 2D/3D structure were fabricated.•3D hierarchical microspheres were anchored in the interconnected 2D nanosheets.•The composites exhibited high specific capacitance and excellent rate capability.•The composites exhibited outstanding cycling stability. A novel 2D/3D NiS/Ni3S4 composite was fabricated by a one-pot hydrothermal process, in which 3D hierarchical microspheres were anchored in or covered by the interconnected 2D nanosheets. The composites exhibited a high specific capacitance of 1796 F g−1 and good capacitance retention of 80.5% at a current density of 1 A g−1 after 1000 charge-discharge cycles. Our results indicate that the interconnected 2D/3D NiS/Ni3S4 composites can be a promising electrode material for supercapacitor.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2019.03.125