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Issue 11, 2018
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Facile synthesis of 2D nitrogen-containing porous carbon nanosheets induced by graphene oxide for high-performance supercapacitors

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Abstract

Two-dimensional (2D) nitrogen-containing porous carbon nanosheets are prepared in the presence of graphene oxide (GO) as a structure-directing agent by a simple yet facile hydrothermal method. It is found that GO can effectively tune the morphologies of the hydrothermal carbonaceous products, resulting in the unique 2D structures. The as-obtained 2D nitrogen-containing porous carbon nanosheets as electrodes for supercapacitors exhibit a high specific capacitance of 301.6 F g−1 at a current density of 0.5 A g−1 and superior rate capability with a capacitance retention of 70.5% at a high current density of 20 A g−1. The 2D nitrogen-containing porous carbon nanosheet electrodes also exhibit good cycling performance, possessing a high capacitance retention of over 92.3% after 5000 charge–discharge cycles at a current density of 5 A g−1. Such superior electrochemical performance of the 2D nitrogen-containing porous carbon nanosheets could be attributed to the high pseudocapacitive effect of the nitrogen-containing species and the peculiar structural characteristics featuring a short ion transport distance and abundant porous channels.

Graphical abstract: Facile synthesis of 2D nitrogen-containing porous carbon nanosheets induced by graphene oxide for high-performance supercapacitors

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Publication details

The article was received on 28 May 2018, accepted on 22 Jul 2018 and first published on 24 Jul 2018


Article type: Paper
DOI: 10.1039/C8SE00242H
Citation: Sustainable Energy Fuels, 2018,2, 2494-2501
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    Facile synthesis of 2D nitrogen-containing porous carbon nanosheets induced by graphene oxide for high-performance supercapacitors

    X. Zhang, Q. Fan, Y. Zhao, M. Wang, Y. Meng, Y. Xiao, X. Lei and J. Yang, Sustainable Energy Fuels, 2018, 2, 2494
    DOI: 10.1039/C8SE00242H

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