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Issue 40, 2019
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Molecular engineering of supercapacitor electrodes with monodispersed N-doped carbon nanoporous spheres

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Abstract

Herein, a novel polytriazine compound was designed and used as a precursor for the synthesis of high nitrogen-doped porous carbon spheres (N-doped carbon-PNSs) by direct carbonization-activation; the process was simple and based on the template-free polycondensation of 2,6-diaminopyridine and formaldehyde in an aqueous solution. Moreover, by varying the 2,6-diaminopyridine to formaldehyde ratio and total monomer concentration during the synthesis of the polymeric precursor, the size of the polytriazine nanospheres could be tuned from 102 to 3900 nm with a uniform spherical geometry. After pyrolysis, the N-doped carbon-PNSs had an average N content of 8.7–10.4 wt% and surface areas of 627.8–924.4 m2 g−1; most importantly, the N-doped carbon-PNSs as high energy supercapacitor electrodes exhibited excellent cyclability and high specific capacitance, ramping up to 424 F g−1 at 1 A g−1 in 6 M KOH.

Graphical abstract: Molecular engineering of supercapacitor electrodes with monodispersed N-doped carbon nanoporous spheres

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Publication details

The article was received on 23 Jul 2019, accepted on 10 Sep 2019 and first published on 10 Sep 2019


Article type: Paper
DOI: 10.1039/C9NJ03810H
New J. Chem., 2019,43, 15892-15898

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    Molecular engineering of supercapacitor electrodes with monodispersed N-doped carbon nanoporous spheres

    X. Huang, N. Wang, F. Li, X. Zhu, K. Liao, V. Chan and L. Zhang, New J. Chem., 2019, 43, 15892
    DOI: 10.1039/C9NJ03810H

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