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31 March 2020
Carbon nanotube-based electrodes for flexible supercapacitors
Jiangfeng Ni2(
),
Yan Li1(
)
),
Yan Li1(
)
Cite this article:
Zhu S, Ni J, Li Y.
Carbon nanotube-based electrodes for flexible supercapacitors.
Nano Research,
2020, 13(7): 1825-1841.
https://doi.org/10.1007/s12274-020-2729-5
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Flexible supercapacitors (SCs) have attracted increasing attention as the power supply unit for portable/wearable electronics. Carbon nanotubes (CNTs) are promising candidate materials for flexible SC electrodes because of their outstanding mechanical property, high electrical conductivity, large surface area, and functionability. CNTs can assemble into various macroscopic materials with different dimensions. In this review, flexible CNT assemblies including 1D fibers, 2D films, and 3D aerogels and sponges are introduced with a focus on the design strategies and fabrication techniques. The recent developments and state-of-the-art applications of such structures as electrodes in flexible SCs are summarized based on device configurations including sandwiched, interdigital in-plane, and cable-type configurations. The flexible CNT-based electrodes have shown great advantages in bendability, stretchability and/or compressibility, as well as a long cycle lifetime. The current challenges and future research opportunities in this field are also discussed.
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Carbon nanotube-based electrodes for flexible supercapacitors
Jiangfeng Ni2(
), Yan Li1(
)
), Yan Li1(
)
Abstract
Flexible supercapacitors (SCs) have attracted increasing attention as the power supply unit for portable/wearable electronics. Carbon nanotubes (CNTs) are promising candidate materials for flexible SC electrodes because of their outstanding mechanical property, high electrical conductivity, large surface area, and functionability. CNTs can assemble into various macroscopic materials with different dimensions. In this review, flexible CNT assemblies including 1D fibers, 2D films, and 3D aerogels and sponges are introduced with a focus on the design strategies and fabrication techniques. The recent developments and state-of-the-art applications of such structures as electrodes in flexible SCs are summarized based on device configurations including sandwiched, interdigital in-plane, and cable-type configurations. The flexible CNT-based electrodes have shown great advantages in bendability, stretchability and/or compressibility, as well as a long cycle lifetime. The current challenges and future research opportunities in this field are also discussed.
Keywords:
carbon nanotubes, supercapacitors, nanostructures, flexible, electrodes
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Publication history
Copyright
Acknowledgements
Publication history
Received: 29 November 2019
Revised: 13 February 2020
Accepted: 23 February 2020
Published:
31 March 2020
Issue date: July 2020
Copyright
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Acknowledgements
This project was financially supported by the National Natural Science Foundation of China (Nos. 21631002 and U1632119), the Ministry of Science and Technology of China (No. 2016YFA0201904), and the Jiangsu Natural Science Foundation (No. BK20180002).
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