Promising biomass-derived nitrogen-doped porous carbon for high performance supercapacitor

Jiangqi Zhou, Min Wang, Xin Li*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

We proposed a simple strategy of one-pot carbonization, activation and nitrogen-doped processes to prepare biomass-derived nitrogen-doped porous carbon (NPC-K) by using well-sourced dumpling flour as carbon precursor, urea as nitrogen precursor and KOH as activation agent. In this process, the combination of KOH and urea was used to construct a highly porous structure because of their synergistic effect. The as-prepared NPC-K exhibited honeycomb-like porous structure, large specific surface area (2853.6 m 2  g −1 ) and moderate nitrogen content. Therefore, the NPC-K displayed maximum specific capacitance of 311 F g −1 at 1 A g −1 , outstanding rate capability and long lifetime of 10000 cycles in 6M KOH. Furthermore, NPC-K based symmetrical supercapacitor presented a high energy density of 15.92 Wh kg −1 . These results are superior to many previously reported carbon materials.

Original languageEnglish
Pages (from-to)99-108
Number of pages10
JournalJournal of Porous Materials
Volume26
Issue number1
DOIs
Publication statusPublished - 15 Feb 2019

Keywords

  • Biomass
  • Carbon materials
  • Facile preparation
  • Porous materials
  • Supercapacitors

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