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

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DOI

  • Li Ping Lv, Max Planck Institute for Polymer Research
  • ,
  • Zhong Shuai Wu, Max Planck Institute for Polymer Research
  • ,
  • Long Chen, Department of Chemistry, School of Science, Tianjin University
  • ,
  • Hao Lu, Max Planck Institute for Polymer Research
  • ,
  • Yi Ran Zheng, Max Planck Institute for Polymer Research
  • ,
  • Tobias Weidner
  • Xinliang Feng, Max Planck Institute for Polymer Research
  • ,
  • Katharina Landfester, Max Planck Institute for Polymer Research
  • ,
  • Daniel Crespy, Max Planck Institute for Polymer Research

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.

OriginalsprogEngelsk
TidsskriftRSC Advances
Vol/bind5
Nummer62
Sider (fra-til)50063-50069
Antal sider7
ISSN2046-2069
DOI
StatusUdgivet - 2015
Eksternt udgivetJa

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