Hierarchical Porous Carbon Materials Prepared by Direct Carbonization of Metal–Organic Frameworks as an Electrode Material for Supercapacitors

Soonsang Hong, Younghoon Kim, Yelin Kim, Kyungwon Suh, Minyoung Yoon, Kimoon Kim

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

We report the synthesis and characterization of hierarchical porous carbons (HPCs) prepared by direct carbonization of zinc-based metal–organic frameworks (MOFs), and their electrochemical performance as an electrode material for supercapacitors. All the HPCs showed high porosity (Brunauer–Emmett–Teller (BET) surface areas 1000–1820 m2/g) with micro-, meso-, and macropores. The HPC-based electrodes exhibited a high-specific capacitance in the range of 164–203 F/g (scan rate: 10 mV/s), which suggests that these porous carbons may be useful for fabricating supercapacitors. Among the HPCs, HPC-4 with the largest surface area as well as with ~1% nitrogen content exhibited the highest specific capacitance, which is comparable with those of other reported carbon materials. This work suggests that the hierarchical porosity and nitrogen doping in HPCs may enhance their conductivity and specific capacitance.

Original languageEnglish
Pages (from-to)309-314
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume42
Issue number2
DOIs
StatePublished - Feb 2021

Keywords

  • Hierarchical porosity
  • Metal–organic framework
  • N-doping
  • Porous carbon
  • Supercapacitor

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