One-step combustion synthesis porous amorphous NiO/C/CNTs composite for high-performance supercapacitors

High-quality amorphous NiO/C/carbon nanotubes (CNTs) composite with an irregular porous structure have been successfully synthesised by a one-step combustion process at 350°C for 2 h with a heating rate of 3°C/min in air. To fully understand the potential of NiO/C/CNTs, the phase composition, morpho...

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Bibliographic Details
Published in:Micro & nano letters 2018-08, Vol.13 (8), p.1209-1212
Main Authors: Xuan, Haicheng, Zhang, Tuo, Xu, Yuekui, Zhang, Yongqing, Li, Hui, Han, Peide, Wang, Dunhui, Du, Youwei
Format: Article
Language:English
Subjects:
activated carbon
asymmetric supercapacitor device
capacitance
Carbon
Carbon nanotubes
Combustion synthesis
current density
Electrochemical analysis
electrochemical electrodes
electrochemical properties
energy density
Flux density
Heating rate
high‐performance supercapacitors
high‐quality amorphous NiO/C/carbon nanotubes composite
irregular porous structure
Material properties
Morphology
nanocomposites
nanofabrication
nanoporous materials
Nanotubes
nickel compounds
Nickel oxides
NiO‐C
one‐step combustion process
one‐step combustion synthesis
Phase composition
Porous materials
Supercapacitors
temperature 350.0 degC
time 2.0 hour
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Summary:High-quality amorphous NiO/C/carbon nanotubes (CNTs) composite with an irregular porous structure have been successfully synthesised by a one-step combustion process at 350°C for 2 h with a heating rate of 3°C/min in air. To fully understand the potential of NiO/C/CNTs, the phase composition, morphology and electrochemical properties of materials were investigated. Benefiting from the in situ formed carbon, the addition of the CNTs and the advantages of the porous structure, the materials have shown superior electrochemical properties for supercapacitors. The specific capacitance of the composite reaches up to 1618 F/g at a current density of 1 A/g. Furthermore, the NiO/C/CNTs||activate carbon asymmetric supercapacitor device demonstrates both a high energy density (25.9 Wh kg−1) and power density (5570 W kg−1), and delivers a better cycling stability (about 94%) after 7000 cycles, which is a potential material for further development of fabricating a supercapacitor electrode.
ISSN:1750-0443
1750-0443
DOI:10.1049/mnl.2018.0066