Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor
Abstract Carbon super‐heterostructures with high nitrogen contents from the covalent hybrid precursors of covalent triazine frameworks (CTFs) and zeolitic imidazolic frameworks (ZIFs) are scarcely explored because of CTF's ordered structure and toxic superacid that dissolves or destabilizes the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-10-01
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| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.344 |
| _version_ | 1797510945888534528 |
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| author | Madagonda M. Vadiyar Ji‐Young Kim Jee‐Hwan Bae Kyung‐Wan Nam |
| author_facet | Madagonda M. Vadiyar Ji‐Young Kim Jee‐Hwan Bae Kyung‐Wan Nam |
| author_sort | Madagonda M. Vadiyar |
| collection | DOAJ |
| description | Abstract Carbon super‐heterostructures with high nitrogen contents from the covalent hybrid precursors of covalent triazine frameworks (CTFs) and zeolitic imidazolic frameworks (ZIFs) are scarcely explored because of CTF's ordered structure and toxic superacid that dissolves or destabilizes the metal nodes. To solve this problem, herein, we report a straightforward two‐step pathway for the covalent hybridization of disordered CTF (d–CTF)–ZIF composites via preincorporation of an imidazole (IM) linker into ordered CTFs, followed by the imidazole‐site‐specific covalent growth of ZIFs. Direct carbonization of these synthesized d–CTF−IM−ZIF hybrids results in unique hollow carbon super‐heterostructures with ultrahigh nitrogen content (>18.6%), high specific surface area (1663 m2 g−1), and beneficial trace metal (Co/Zn NPs) contents for promoting the redox pseudocapacitance. As proof of concept, the obtained carbon super‐heterostructure (Co–Zn–NCSNH–800) is used as a positive electrode in an asymmetric supercapacitor, demonstrating a remarkable energy density of 61 Wh kg−1 and extraordinary cyclic stability of 97% retention after 30,000 cycles at the cell level. Our presynthetic modifications of CTF and their covalent hybridization with ZIF crystals pave the way toward new design strategies for synthesizing functional porous carbon materials for promising energy applications. |
| first_indexed | 2024-03-10T05:38:24Z |
| format | Article |
| id | doaj.art-803a76c1d20046cd86459458a8e3869f |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-03-10T05:38:24Z |
| publishDate | 2023-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-803a76c1d20046cd86459458a8e3869f2023-11-22T22:45:00ZengWileyCarbon Energy2637-93682023-10-01510n/an/a10.1002/cey2.344Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitorMadagonda M. Vadiyar0Ji‐Young Kim1Jee‐Hwan Bae2Kyung‐Wan Nam3Department of Energy and Materials Engineering Dongguk University Seoul South KoreaAdvanced Analysis & Data Center Korea Institute of Science and Technology (KIST) Seoul South KoreaAdvanced Analysis & Data Center Korea Institute of Science and Technology (KIST) Seoul South KoreaDepartment of Energy and Materials Engineering Dongguk University Seoul South KoreaAbstract Carbon super‐heterostructures with high nitrogen contents from the covalent hybrid precursors of covalent triazine frameworks (CTFs) and zeolitic imidazolic frameworks (ZIFs) are scarcely explored because of CTF's ordered structure and toxic superacid that dissolves or destabilizes the metal nodes. To solve this problem, herein, we report a straightforward two‐step pathway for the covalent hybridization of disordered CTF (d–CTF)–ZIF composites via preincorporation of an imidazole (IM) linker into ordered CTFs, followed by the imidazole‐site‐specific covalent growth of ZIFs. Direct carbonization of these synthesized d–CTF−IM−ZIF hybrids results in unique hollow carbon super‐heterostructures with ultrahigh nitrogen content (>18.6%), high specific surface area (1663 m2 g−1), and beneficial trace metal (Co/Zn NPs) contents for promoting the redox pseudocapacitance. As proof of concept, the obtained carbon super‐heterostructure (Co–Zn–NCSNH–800) is used as a positive electrode in an asymmetric supercapacitor, demonstrating a remarkable energy density of 61 Wh kg−1 and extraordinary cyclic stability of 97% retention after 30,000 cycles at the cell level. Our presynthetic modifications of CTF and their covalent hybridization with ZIF crystals pave the way toward new design strategies for synthesizing functional porous carbon materials for promising energy applications.https://doi.org/10.1002/cey2.344asymmetric supercapacitordefective covalent triazine frameworkshollow carbon super‐heterostructureslinker defect |
| spellingShingle | Madagonda M. Vadiyar Ji‐Young Kim Jee‐Hwan Bae Kyung‐Wan Nam Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor Carbon Energy asymmetric supercapacitor defective covalent triazine frameworks hollow carbon super‐heterostructures linker defect |
| title | Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor |
| title_full | Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor |
| title_fullStr | Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor |
| title_full_unstemmed | Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor |
| title_short | Imidazole linker‐induced covalent triazine framework–ZIF hybrids for confined hollow carbon super‐heterostructures toward a long‐life supercapacitor |
| title_sort | imidazole linker induced covalent triazine framework zif hybrids for confined hollow carbon super heterostructures toward a long life supercapacitor |
| topic | asymmetric supercapacitor defective covalent triazine frameworks hollow carbon super‐heterostructures linker defect |
| url | https://doi.org/10.1002/cey2.344 |
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