Porous nitrogen-doped carbon microspheres derived from microporous polymeric organic frameworks for high performance electric double-layer capacitors

Jinpeng Han, Guiyin Xu, Hui Dou, Douglas Robert Macfarlane

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34 Citations (Scopus)

Abstract

This research presents a simple and efficient method to synthesize porous nitrogen-doped carbon microspheres (PNCM) by the carbonization of microporous poly(terephthalaldehyde-pyrrole) organic frameworks (PtpOF). The common KOH activation process is used to tune the porous texture of the PNCM and produce an activated- PNCM (A-PNCM). The PNCM and A-PNCM with specific surface area of 921 and 1303 m2g-1, respectively, are demonstrated as promising candidates for EDLCs. At a current density of 0.5 A g-1, the specific capacitances of the PNCM and A-PNCM are 248 and 282 F g-1, respectively. At the relatively high current density of 20 A g-1, the capacitance remaining is 95 and 154 F g-1, respectively. Capacity retention of the A-PNCM is more than 92 after 10000 charge/discharge cycles at a current density of 2 A g-1.
Original languageEnglish
Pages (from-to)2310-2314
Number of pages5
JournalChemistry - A European Journal
Volume21
Issue number6
DOIs
Publication statusPublished - 2015

Keywords

  • energy storage
  • nitrogen doping
  • POF
  • porous carbon
  • supercapacitors

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