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Fluorine/Nitrogen Co-Doped Porous Carbons Derived from Covalent Triazine Frameworks for High-Performance Supercapacitors

Journal Article


Abstract


  • Porous carbon materials with a synergistically large specific surface area (SBET) and an adjustable structure are urgently needed to meet the demands of high-performance supercapacitors (SCs) and other electrochemical devices. Although numerous studies have been dedicated to designing multifunctional porous carbons, most of them still have shown hard-control doping sites and unclear structures. Herein, we prepare a series of structure-controlled F/N co-doped porous carbons (FNCs) with large SBET via an in situ doping process based on F- and N-rich covalent triazine-based frameworks (FCTFs) as precursors. The as-prepared high-F/N-containing FNC-700 with a large SBET (∼1849.1 m2 g-1) as the aqueous-based SC electrode achieves a specific capacitance (Cs) of 326 F g-1 at 1 A g-1, remarkable cyclability with negligible capacitance decay after 10,000 cycles in three-electrode systems, and a maximum energy density of 31.4 Wh kg-1 in two-electrode systems. This study has an insightful hint in exploring multifunctional heteroatom-doped carbons by the in situ doping process.

UOW Authors


  •   Chou, Shulei (external author)

Publication Date


  • 2021

Citation


  • Gao, Y., Cui, P., Liu, J., Sun, W., Chen, S., Chou, S., . . . Wang, Y. (2021). Fluorine/Nitrogen Co-Doped Porous Carbons Derived from Covalent Triazine Frameworks for High-Performance Supercapacitors. ACS Applied Energy Materials, 4(5), 4519-4529. doi:10.1021/acsaem.1c00155

Scopus Eid


  • 2-s2.0-85106478619

Start Page


  • 4519

End Page


  • 4529

Volume


  • 4

Issue


  • 5

Abstract


  • Porous carbon materials with a synergistically large specific surface area (SBET) and an adjustable structure are urgently needed to meet the demands of high-performance supercapacitors (SCs) and other electrochemical devices. Although numerous studies have been dedicated to designing multifunctional porous carbons, most of them still have shown hard-control doping sites and unclear structures. Herein, we prepare a series of structure-controlled F/N co-doped porous carbons (FNCs) with large SBET via an in situ doping process based on F- and N-rich covalent triazine-based frameworks (FCTFs) as precursors. The as-prepared high-F/N-containing FNC-700 with a large SBET (∼1849.1 m2 g-1) as the aqueous-based SC electrode achieves a specific capacitance (Cs) of 326 F g-1 at 1 A g-1, remarkable cyclability with negligible capacitance decay after 10,000 cycles in three-electrode systems, and a maximum energy density of 31.4 Wh kg-1 in two-electrode systems. This study has an insightful hint in exploring multifunctional heteroatom-doped carbons by the in situ doping process.

UOW Authors


  •   Chou, Shulei (external author)

Publication Date


  • 2021

Citation


  • Gao, Y., Cui, P., Liu, J., Sun, W., Chen, S., Chou, S., . . . Wang, Y. (2021). Fluorine/Nitrogen Co-Doped Porous Carbons Derived from Covalent Triazine Frameworks for High-Performance Supercapacitors. ACS Applied Energy Materials, 4(5), 4519-4529. doi:10.1021/acsaem.1c00155

Scopus Eid


  • 2-s2.0-85106478619

Start Page


  • 4519

End Page


  • 4529

Volume


  • 4

Issue


  • 5