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Issue 104, 2016, Issue in Progress
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Nitrogen-doped porous carbon with a hierarchical structure prepared for a high performance symmetric supercapacitor

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Abstract

Here, we present a facile approach to synthesizing nitrogen-doped porous carbon materials (NPCs) through carbonization of poly(o-phenylenediamine) (PoPD) by using molten-salt as a template. The as-prepared NPCs exhibit hierarchically micro-nanometric porous structure and unprecedented nitrogen content (14.86 wt%). The micrometric pores are interconnected which form from the micrometric salt droplets during carbonization, while the nanopores are generated by the exclusion of small molecular gases. This unique structure and high nitrogen content endows the NPCs with excellent specific capacitance (364.93 F g−1 at 2 mV s−1) and good cycling stability (92.3% capacitance retention at 10 A g−1 after 5000 cycles) in 6 M KOH electrolyte. Moreover, the symmetric supercapacitor array fabricated with the NPCs can easily power a light-emitting diode (LED), demonstrating the practical application of the NPCs in energy storage.

Graphical abstract: Nitrogen-doped porous carbon with a hierarchical structure prepared for a high performance symmetric supercapacitor

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Publication details

The article was received on 24 Jul 2016, accepted on 18 Oct 2016 and first published on 18 Oct 2016


Article type: Paper
DOI: 10.1039/C6RA18769B
Citation: RSC Adv., 2016,6, 101988-101994
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    Nitrogen-doped porous carbon with a hierarchical structure prepared for a high performance symmetric supercapacitor

    Z. Lei, Y. Li, L. Zhang, Z. Zhou, A. Liu, Y. Zhang and S. Liu, RSC Adv., 2016, 6, 101988
    DOI: 10.1039/C6RA18769B

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