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Boosting the electrochemical performance of carbon cloth negative electrodes by constructing hierarchically porous nitrogen-doped carbon nanofiber layers for all-solid-state asymmetric supercapacitors

Abstract

The electrochemical performance of carbon cloth directly relates to its surface area, porosity and functional group of primary carbon fibers. In this study, after rationally functionalizing the carbon cloth fiber surface with 3D porous nitrogen-doped carbon nanofiber layers, the resultant 3D hierarchical porous nitrogen-doped carbon nanofibers/carbon cloth negative electrode exhibits superior supercapacitive performance due to its large surface area, suitable porosity, nitrogen-doped carbon surface and fast electron transportation. This electrode delivers high areal capacitance of 608 mF cm-2 at 1 mA cm-2 and good cycle life (capacitance retention of 99% after the 5000th cycle). An asymmetric supercapacitor device is also assembled by using NiO@carbon nanofibers/carbon cloth as the positive electrode and nitrogen-doped carbon nanofibers/carbon cloth as the negative electrode, which exhibits high energy density of 19.5 Wh kg-1 at 4.1 kW kg-1.

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Publication details

The article was received on 14 Jun 2018, accepted on 09 Aug 2018 and first published on 10 Aug 2018


Article type: Research Article
DOI: 10.1039/C8QM00293B
Citation: Mater. Chem. Front., 2018, Accepted Manuscript
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    Boosting the electrochemical performance of carbon cloth negative electrodes by constructing hierarchically porous nitrogen-doped carbon nanofiber layers for all-solid-state asymmetric supercapacitors

    Y. Liu, J. Zhang, H. Wang, X. Kang and S. Bian, Mater. Chem. Front., 2018, Accepted Manuscript , DOI: 10.1039/C8QM00293B

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