Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors
Abstract Supercapacitors have been used in a broad range of fields including electronics, transportation, and energies. Electrode materials with high capacitance and good rate performance are crucial for the future development and application of supercapacitors. Herein, we prepared N, O co‐doped def...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-05-01
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| Series: | Nano Select |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/nano.202300002 |
| _version_ | 1797831016644083712 |
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| author | Yue Dong Xiao Dong Dezhao Zhu Yanxiang Yang Chen Luo Yang Li Jinshan Li |
| author_facet | Yue Dong Xiao Dong Dezhao Zhu Yanxiang Yang Chen Luo Yang Li Jinshan Li |
| author_sort | Yue Dong |
| collection | DOAJ |
| description | Abstract Supercapacitors have been used in a broad range of fields including electronics, transportation, and energies. Electrode materials with high capacitance and good rate performance are crucial for the future development and application of supercapacitors. Herein, we prepared N, O co‐doped defective carbon blocks (NO‐DCBs) with abundant active sites through carbonization and ball‐milling of polyimide. The as‐obtained NO‐DCBs exhibit high atomic content of N and O inherited from polyamic acid (PAA) precursor, as well as large amounts of intrinsic defects introduced by ball‐milling. Benefiting from the synergy of pseudocapacitance and electrical double‐layer capacitance provided by heteroatoms and intrinsic defects respectively, the NO‐DCBs assembled symmetric aqueous capacitor shows high capacitance of 329 F g−1 at 0.1 A g−1, good rate performance of 48% capacitance retention at 50 A g−1, and superb cycling stability. This work promotes the deep understanding of the synergy effect of functional groups and intrinsic defects for capacitive energy storage, and broadens the avenue for structural design of active sites in carbon materials. |
| first_indexed | 2024-04-09T13:46:05Z |
| format | Article |
| id | doaj.art-8862b5e1d62e49ed88580dce1c54989a |
| institution | Directory Open Access Journal |
| issn | 2688-4011 |
| language | English |
| last_indexed | 2024-04-09T13:46:05Z |
| publishDate | 2023-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Nano Select |
| spelling | doaj.art-8862b5e1d62e49ed88580dce1c54989a2023-05-09T04:49:04ZengWiley-VCHNano Select2688-40112023-05-014531632310.1002/nano.202300002Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitorsYue Dong0Xiao Dong1Dezhao Zhu2Yanxiang Yang3Chen Luo4Yang Li5Jinshan Li6Advanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAdvanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAdvanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAdvanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAdvanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAdvanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAdvanced Materials Research Center Petrochemical Research Institute of Petrochina Co. Ltd. Beijing ChinaAbstract Supercapacitors have been used in a broad range of fields including electronics, transportation, and energies. Electrode materials with high capacitance and good rate performance are crucial for the future development and application of supercapacitors. Herein, we prepared N, O co‐doped defective carbon blocks (NO‐DCBs) with abundant active sites through carbonization and ball‐milling of polyimide. The as‐obtained NO‐DCBs exhibit high atomic content of N and O inherited from polyamic acid (PAA) precursor, as well as large amounts of intrinsic defects introduced by ball‐milling. Benefiting from the synergy of pseudocapacitance and electrical double‐layer capacitance provided by heteroatoms and intrinsic defects respectively, the NO‐DCBs assembled symmetric aqueous capacitor shows high capacitance of 329 F g−1 at 0.1 A g−1, good rate performance of 48% capacitance retention at 50 A g−1, and superb cycling stability. This work promotes the deep understanding of the synergy effect of functional groups and intrinsic defects for capacitive energy storage, and broadens the avenue for structural design of active sites in carbon materials.https://doi.org/10.1002/nano.202300002aqueous supercapacitorsintrinsic defectsNO co‐dopedpolyamic acid |
| spellingShingle | Yue Dong Xiao Dong Dezhao Zhu Yanxiang Yang Chen Luo Yang Li Jinshan Li Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors Nano Select aqueous supercapacitors intrinsic defects N O co‐doped polyamic acid |
| title | Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors |
| title_full | Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors |
| title_fullStr | Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors |
| title_full_unstemmed | Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors |
| title_short | Combination of multiple active sites in N, O co‐doped defective carbon materials for high performance aqueous supercapacitors |
| title_sort | combination of multiple active sites in n o co doped defective carbon materials for high performance aqueous supercapacitors |
| topic | aqueous supercapacitors intrinsic defects N O co‐doped polyamic acid |
| url | https://doi.org/10.1002/nano.202300002 |
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