Novel 3D porous graphene/Ni3S2 nanostructures for high-performance supercapacitor electrodes
JOURNAL OF ALLOYS AND COMPOUNDS(2018)
摘要
A three-dimensional (3D) graphene/Ni3S2 nanostructure grown on nickel foam using a one-step chemical vapor deposition process is an excellent template for the synthesis of graphene-based composite electrodes for use in supercapacitors. The as-grown graphene/Ni3S2 nano-structures have high crystalline quality and surface area. Electrochemical characterization shows that the 3D porous graphene/Ni3S2 electrode exhibits a high specific capacitance of 741 F/g at 1 mV/s, with 92.3% of the specific capacitance retained after 5000 charging-discharging cycles. Such high performance of a 3D graphene electrode can enrich the prospects for future practical applications in energy storage. (c) 2017 Elsevier B.V. All rights reserved.
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关键词
3D porous graphene,Ni3S2 nanostructures,Supercapacitor
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