Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries
Abstract Flexible Zn–air batteries (FZABs) exhibit low cost and inherent safety and have potential for application in wearable electronic devices. Nevertheless, balancing the high energy density and flexibility of the self-supported electrodes in FZABs is still a challenge. Herein, we develop a nove...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-03-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-022-00446-9 |
| _version_ | 1797274175203704832 |
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| author | Huaipeng Pang Meng Wang Peipei Sun Wenshuai Zhang Dan Wang Runhao Zhang Li Qiao Weijie Wang Meng Gao Yong Li Jiang Chen Kang Liang Biao Kong |
| author_facet | Huaipeng Pang Meng Wang Peipei Sun Wenshuai Zhang Dan Wang Runhao Zhang Li Qiao Weijie Wang Meng Gao Yong Li Jiang Chen Kang Liang Biao Kong |
| author_sort | Huaipeng Pang |
| collection | DOAJ |
| description | Abstract Flexible Zn–air batteries (FZABs) exhibit low cost and inherent safety and have potential for application in wearable electronic devices. Nevertheless, balancing the high energy density and flexibility of the self-supported electrodes in FZABs is still a challenge. Herein, we develop a novel superassembly strategy for the preparation of N, S-codoped porous carbon frameworks (NS@CFs) as cathodes in FZABs. Benefiting from the abundant heteroatom defect sites, NS@CF exhibits excellent electrocatalytic performance for the oxygen reduction reaction (ORR), including high electrochemical activity and long-term stability. When used as the cathode in a liquid flowing ZAB, NS@CF exhibited a power density of 221 mW cm−2 and achieved a 60% improvement over Pt/C-based ZABs. This new ZAB exhibited a high specific capacity of 792 mA h gZn −1, excellent long-term durability and cycling stability, which is superior to those of ZABs assembled with commercial Pt/C cathodes. In addition, the flexible NS@CF with directional channels can be used as independent air cathodes for FZABs, where it provides small charge/discharge voltage gaps, a power density of 49 mW cm−2 and outstanding cycling stability. This work provides a novel strategy for designing and fabricating highly efficient integrated electrodes for flexible and wearable electrochemical devices. |
| first_indexed | 2024-03-07T14:54:37Z |
| format | Article |
| id | doaj.art-8a3813464d8d4fe2afd51d01fd757cda |
| institution | Directory Open Access Journal |
| issn | 1884-4057 |
| language | English |
| last_indexed | 2024-03-07T14:54:37Z |
| publishDate | 2023-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj.art-8a3813464d8d4fe2afd51d01fd757cda2024-03-05T19:29:28ZengNature PortfolioNPG Asia Materials1884-40572023-03-0115111110.1038/s41427-022-00446-9Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteriesHuaipeng Pang0Meng Wang1Peipei Sun2Wenshuai Zhang3Dan Wang4Runhao Zhang5Li Qiao6Weijie Wang7Meng Gao8Yong Li9Jiang Chen10Kang Liang11Biao Kong12National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences)ARC Research Hub for Computational Particle Technology, Monash UniversitySchool of Chemical Engineering and Graduate School of Biomedical Engineering, The University of New South WalesDepartment of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials iChEM, Fudan UniversityAbstract Flexible Zn–air batteries (FZABs) exhibit low cost and inherent safety and have potential for application in wearable electronic devices. Nevertheless, balancing the high energy density and flexibility of the self-supported electrodes in FZABs is still a challenge. Herein, we develop a novel superassembly strategy for the preparation of N, S-codoped porous carbon frameworks (NS@CFs) as cathodes in FZABs. Benefiting from the abundant heteroatom defect sites, NS@CF exhibits excellent electrocatalytic performance for the oxygen reduction reaction (ORR), including high electrochemical activity and long-term stability. When used as the cathode in a liquid flowing ZAB, NS@CF exhibited a power density of 221 mW cm−2 and achieved a 60% improvement over Pt/C-based ZABs. This new ZAB exhibited a high specific capacity of 792 mA h gZn −1, excellent long-term durability and cycling stability, which is superior to those of ZABs assembled with commercial Pt/C cathodes. In addition, the flexible NS@CF with directional channels can be used as independent air cathodes for FZABs, where it provides small charge/discharge voltage gaps, a power density of 49 mW cm−2 and outstanding cycling stability. This work provides a novel strategy for designing and fabricating highly efficient integrated electrodes for flexible and wearable electrochemical devices.https://doi.org/10.1038/s41427-022-00446-9 |
| spellingShingle | Huaipeng Pang Meng Wang Peipei Sun Wenshuai Zhang Dan Wang Runhao Zhang Li Qiao Weijie Wang Meng Gao Yong Li Jiang Chen Kang Liang Biao Kong Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries NPG Asia Materials |
| title | Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries |
| title_full | Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries |
| title_fullStr | Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries |
| title_full_unstemmed | Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries |
| title_short | Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries |
| title_sort | super assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible zn air batteries |
| url | https://doi.org/10.1038/s41427-022-00446-9 |
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