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Issue 29, 2018
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A nitrogen-doped 3D open-structured graphite nanofiber matrix for high-performance supercapacitors

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Abstract

An N-doped 3D ordered mesoporous graphite nanofiber (3D OMGNF-N) with an N-doping level of up to 16.5 at% for high-performance supercapacitors is designed and synthesized. OMGNF-N shows a conductive 3D open-structured matrix, large surface area, hierarchical porous structure, and great number of electrochemically active sites by N-doping. The supercapacitors (SCs) based on OMGNF-N show a remarkably excellent electrochemical behavior with a high specific capacitance of 460, 420, and 345 F g−1, respectively, in KOH, H2SO4, and KCl electrolytes when measured in a three-electrode configuration. In practical devices, the material can achieve a remarkably high capacitance of 426 F g−1, good cycling stability with 92% capacitance retention after 50 000 cycles. Moreover, the OMGNF-N based SCs show a remarkably excellent electrochemical behavior with good rate capability and low internal resistance, thereby leading to both high power density and relatively high energy density.

Graphical abstract: A nitrogen-doped 3D open-structured graphite nanofiber matrix for high-performance supercapacitors

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Publication details

The article was received on 27 Apr 2018, accepted on 28 Jun 2018 and first published on 28 Jun 2018


Article type: Communication
DOI: 10.1039/C8TA03896A
Citation: J. Mater. Chem. A, 2018,6, 14065-14068

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    A nitrogen-doped 3D open-structured graphite nanofiber matrix for high-performance supercapacitors

    Y. Zhou, Y. Zhu, D. Xue and B. Xu, J. Mater. Chem. A, 2018, 6, 14065
    DOI: 10.1039/C8TA03896A

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