Jump to main content
Jump to site search


Combined effect of nitrogen and oxygen heteroatoms and micropores of porous carbon frameworks from Schiff-base networks on their high supercapacitance

Author affiliations

Abstract

Nitrogen and oxygen heteroatom doped porous carbon frameworks (HPCFs) have been constructed through the structural evolution of 2D microporous Schiff-base frameworks from the rigid polyquinoneimine and trigonal-symmetrical triformylphloroglucinol. Owing to its predictable and controllable nitrogen and oxygen doping and pore structures, the derived HPCF material exhibits good electrochemical properties as a supercapacitor electrode with remarkable specific capacitance (479.5 F g−1 at 0.1 A g−1 and 125 F g−1 at 10 A g−1) and excellent long-term cycling stability over 10 000 cycles. The combined effect of heteroatom doping and micropores on its electrochemical performance as a supercapacitor electrode is thoroughly investigated. According to the analysis of the electrochemical behavior, pores larger than 5 Å in HPCFs are effective for electrical double-layer capacitance, which is associated with the size of hydrated ions. With regard to the heteroatoms, while the quaternary nitrogen functionalities can improve electron transfer, pyrrolic and pyridinic nitrogens as well as quinone oxygen are the most conducive functional groups for pseudocapacitive performance.

Graphical abstract: Combined effect of nitrogen and oxygen heteroatoms and micropores of porous carbon frameworks from Schiff-base networks on their high supercapacitance

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 Sep 2017, accepted on 10 Dec 2017 and first published on 19 Dec 2017


Article type: Paper
DOI: 10.1039/C7TA08366A
Citation: J. Mater. Chem. A, 2018, Advance Article
  •   Request permissions

    Combined effect of nitrogen and oxygen heteroatoms and micropores of porous carbon frameworks from Schiff-base networks on their high supercapacitance

    M. Zhou, X. Li, H. Zhao, J. Wang, Y. Zhao, F. Ge and Z. Cai, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA08366A

Search articles by author

Spotlight

Advertisements