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Issue 62, 2015
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Precursor-controlled and template-free synthesis of nitrogen-doped carbon nanoparticles for supercapacitors

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Abstract

We describe the synthesis of hierarchical porous nitrogen-doped carbon nanoparticles with high specific surface area and specific capacitance for supercapacitors. Octapyrrolylnaphthalene (OPN) with eight substituent pyrrolyl groups is used as a reaction precursor and the oxidative product, assigned as POPN, is synthesized in miniemulsion droplets. Further carbonization of POPN at 600 °C (POPN600) and 800 °C (POPN800) provides particles with hierarchical porosity, well-defined nanoparticle structure, and high specific surface area. The obtained nitrogen-doped carbon particles POPN800 exhibit a specific capacitance of 156 F g−1 at the scan rate of 2 mV s−1 and 80 F g−1 when the scan rate increases to 100 mV s−1. The high specific capacitance and excellent rate capability can be attributed to the controlled structure of the nanoparticles, hierarchical micro- and mesoporosity, high surface area (365 m2 g−1), and rich nitrogen-doping. The present method allows therefore for the synthesis of nitrogen-doped carbon materials for supercapacitors in an easy one-pot and template-free miniemulsion procedure followed by carbonization.

Graphical abstract: Precursor-controlled and template-free synthesis of nitrogen-doped carbon nanoparticles for supercapacitors

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Publication details

The article was received on 08 May 2015, accepted on 28 May 2015 and first published on 28 May 2015


Article type: Paper
DOI: 10.1039/C5RA06697B
Citation: RSC Adv., 2015,5, 50063-50069
  • Open access: Creative Commons BY license
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    Precursor-controlled and template-free synthesis of nitrogen-doped carbon nanoparticles for supercapacitors

    L. Lv, Z. Wu, L. Chen, H. Lu, Y. Zheng, T. Weidner, X. Feng, K. Landfester and D. Crespy, RSC Adv., 2015, 5, 50063
    DOI: 10.1039/C5RA06697B

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