Cargando…

Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors

Covalent organic frameworks (COFs) have attracted significant interest because of their heteroatom-containing architectures, high porous networks, large surface areas, and capacity to include redox-active units, which can provide good electrochemical efficiency in energy applications. In this resear...

Descripción completa

Detalles Bibliográficos
Autores principales: Yang, Tzu-Ling, Chen, Jhu-You, Kuo, Shiao-Wei, Lo, Chen-Tsyr, El-Mahdy, Ahmed F. M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9413307/
https://www.ncbi.nlm.nih.gov/pubmed/36015687
http://dx.doi.org/10.3390/polym14163428
_version_ 1784775710450122752
author Yang, Tzu-Ling
Chen, Jhu-You
Kuo, Shiao-Wei
Lo, Chen-Tsyr
El-Mahdy, Ahmed F. M.
author_facet Yang, Tzu-Ling
Chen, Jhu-You
Kuo, Shiao-Wei
Lo, Chen-Tsyr
El-Mahdy, Ahmed F. M.
author_sort Yang, Tzu-Ling
collection PubMed
description Covalent organic frameworks (COFs) have attracted significant interest because of their heteroatom-containing architectures, high porous networks, large surface areas, and capacity to include redox-active units, which can provide good electrochemical efficiency in energy applications. In this research, we synthesized two novel hydroxy-functionalized COFs—TAPT-2,3-NA(OH)(2,) TAPT-2,6-NA(OH)(2) COFs—through Schiff-base [3 + 2] polycondensations of 1,3,5-tris-(4-aminophenyl)triazine (TAPT-3NH(2)) with 2,3-dihydroxynaphthalene-1,4-dicarbaldehyde (2,3-NADC) and 2,6-dihydroxynaphthalene-1,5-dicarbaldehyde (2,6-NADC), respectively. The resultant hydroxy-functionalized COFs featured high BET-specific surface areas up to 1089 m(2) g(–1), excellent crystallinity, and superior thermal stability up to 60.44% char yield. When used as supercapacitor electrodes, the hydroxy-functionalized COFs exhibited electrochemical redox activity due to the presence of redox-active 2,3-dihydroxynaphthalene and 2,6-dihydroxynaphthalene in their COF skeletons. The hydroxy-functionalized COFs showed specific capacitance of 271 F g(−)(1) at a current density of 0.5 A g(−)(1) with excellent stability after 2000 cycles of 86.5% capacitance retention. Well-known pore features and high surface areas of such COFs, together with their superior supercapacitor performance, make them suitable electrode materials for use in practical applications.
format Online
Article
Text
id pubmed-9413307
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-94133072022-08-27 Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors Yang, Tzu-Ling Chen, Jhu-You Kuo, Shiao-Wei Lo, Chen-Tsyr El-Mahdy, Ahmed F. M. Polymers (Basel) Article Covalent organic frameworks (COFs) have attracted significant interest because of their heteroatom-containing architectures, high porous networks, large surface areas, and capacity to include redox-active units, which can provide good electrochemical efficiency in energy applications. In this research, we synthesized two novel hydroxy-functionalized COFs—TAPT-2,3-NA(OH)(2,) TAPT-2,6-NA(OH)(2) COFs—through Schiff-base [3 + 2] polycondensations of 1,3,5-tris-(4-aminophenyl)triazine (TAPT-3NH(2)) with 2,3-dihydroxynaphthalene-1,4-dicarbaldehyde (2,3-NADC) and 2,6-dihydroxynaphthalene-1,5-dicarbaldehyde (2,6-NADC), respectively. The resultant hydroxy-functionalized COFs featured high BET-specific surface areas up to 1089 m(2) g(–1), excellent crystallinity, and superior thermal stability up to 60.44% char yield. When used as supercapacitor electrodes, the hydroxy-functionalized COFs exhibited electrochemical redox activity due to the presence of redox-active 2,3-dihydroxynaphthalene and 2,6-dihydroxynaphthalene in their COF skeletons. The hydroxy-functionalized COFs showed specific capacitance of 271 F g(−)(1) at a current density of 0.5 A g(−)(1) with excellent stability after 2000 cycles of 86.5% capacitance retention. Well-known pore features and high surface areas of such COFs, together with their superior supercapacitor performance, make them suitable electrode materials for use in practical applications. MDPI 2022-08-22 /pmc/articles/PMC9413307/ /pubmed/36015687 http://dx.doi.org/10.3390/polym14163428 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, Tzu-Ling
Chen, Jhu-You
Kuo, Shiao-Wei
Lo, Chen-Tsyr
El-Mahdy, Ahmed F. M.
Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors
title Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors
title_full Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors
title_fullStr Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors
title_full_unstemmed Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors
title_short Hydroxyl-Functionalized Covalent Organic Frameworks as High-Performance Supercapacitors
title_sort hydroxyl-functionalized covalent organic frameworks as high-performance supercapacitors
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9413307/
https://www.ncbi.nlm.nih.gov/pubmed/36015687
http://dx.doi.org/10.3390/polym14163428
work_keys_str_mv AT yangtzuling hydroxylfunctionalizedcovalentorganicframeworksashighperformancesupercapacitors
AT chenjhuyou hydroxylfunctionalizedcovalentorganicframeworksashighperformancesupercapacitors
AT kuoshiaowei hydroxylfunctionalizedcovalentorganicframeworksashighperformancesupercapacitors
AT lochentsyr hydroxylfunctionalizedcovalentorganicframeworksashighperformancesupercapacitors
AT elmahdyahmedfm hydroxylfunctionalizedcovalentorganicframeworksashighperformancesupercapacitors