Jump to main content
Jump to site search


Salt-assisted pyrolysis of covalent organic frameworks to porous heteroatom-doped carbons for supercapacitive energy storage

Author affiliations

Abstract

Supercapacitors have attracted intensive research interest due to their advantages including longer cycling ability and higher power density. Porous heteroatom-doped carbons (PHCs) have been regarded as a class of promising electrode materials for supercapacitors because of their unique porous, electronic and chemical properties. However, synthesis of PHCs with hierarchical mesoporous/microporous structures and ultra-high porosity and electrochemical performance remains a great research challenge. In this research, two oxygen and nitrogen co-doped PHCs (denoted as ONC-T1s) are prepared via a salt-assisted pyrolysis method using covalent organic frameworks (COFs) as the precursor. ONC-T1s show a hierarchical porous structure with an ultra-high specific surface area (up to 3451 m2 g−1). The ONC-T1-850-based supercapacitor exhibits a high specific capacitance of 1711 F g−1 at 1 A g−1, an ultra-fast charge–discharge rate up to 500 A g−1 with a specific capacitance of 856 F g−1, and excellent stability. This work establishes a promising strategy for preparation of PHCs using COFs or other porous organic polymers as precursors and demonstrates the great potential of PHC-based supercapacitors.

Graphical abstract: Salt-assisted pyrolysis of covalent organic frameworks to porous heteroatom-doped carbons for supercapacitive energy storage

Back to tab navigation

Supplementary files

Publication details

The article was received on 16 May 2019, accepted on 23 Sep 2019 and first published on 26 Sep 2019


Article type: Paper
DOI: 10.1039/C9TA05150C
J. Mater. Chem. A, 2019, Advance Article

  •   Request permissions

    Salt-assisted pyrolysis of covalent organic frameworks to porous heteroatom-doped carbons for supercapacitive energy storage

    D. Yan, Y. Wu, R. Kitaura and K. Awaga, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C9TA05150C

Search articles by author

Spotlight

Advertisements