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...
Autores principales: | , , , , |
---|---|
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 |