Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage
Abstract Large surface area, high conductivity, and rich active site of carbon electrode materials are necessary characteristics for energy storage devices. However, high conductivity and high nitrogen doping of carbon electrode materials are difficult to coordinate. Here, a facile method via the ca...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-06-01
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| Series: | Carbon Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/cey2.78 |
| _version_ | 1819084706279325696 |
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| author | Peng Wang Xiaohuan Qi Wei Zhao Meng Qian Hui Bi Fuqiang Huang |
| author_facet | Peng Wang Xiaohuan Qi Wei Zhao Meng Qian Hui Bi Fuqiang Huang |
| author_sort | Peng Wang |
| collection | DOAJ |
| description | Abstract Large surface area, high conductivity, and rich active site of carbon electrode materials are necessary characteristics for energy storage devices. However, high conductivity and high nitrogen doping of carbon electrode materials are difficult to coordinate. Here, a facile method via the carbonization of nitrogen‐containing Schiff base polymer has been developed to prepare high conductivity and high nitrogen‐doped hierarchical porous carbon. The organic components with a benzene ring structure in the polymer promote the formation of more sp2‐graphitized carbon, which is beneficial for the improvement of electrical conductivity. Nitrogen‐doped hierarchical porous carbon calcined at 900°C under the NH3 atmosphere possesses high nitrogen content of 7.48 at%, a large specific surface area of 1613.2 m2/g, and high electrical conductivity of 2.7 S/cm. As electrode materials in an aqueous‐based supercapacitor, nitrogen‐doped hierarchical porous carbon exhibits superior specific capacitance of 385 F/g at 1 A/g as well as excellent rate performance (242 and 215 F/g at a current density of 100 and 200 A/g, respectively). In addition, the specific capacitance of electrode measured in a two‐electrode system is 335 F/g at 1 A/g, and the long‐term cycling stability can be achieved with more than 94% initial capacitance after 10 000 cycles. The constructed symmetric supercapacitor delivers high energy density and high power density. The outstanding electrochemical performances combined with the novel and scalable synthetic approach make the nitrogen‐doped hierarchical porous carbon potential electrode material for electrochemical devices. |
| first_indexed | 2024-12-21T20:52:43Z |
| format | Article |
| id | doaj.art-00f49ccfbeca49b9bc1a5ec6bef97598 |
| institution | Directory Open Access Journal |
| issn | 2637-9368 |
| language | English |
| last_indexed | 2024-12-21T20:52:43Z |
| publishDate | 2021-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Carbon Energy |
| spelling | doaj.art-00f49ccfbeca49b9bc1a5ec6bef975982022-12-21T18:50:40ZengWileyCarbon Energy2637-93682021-06-013234935910.1002/cey2.78Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storagePeng Wang0Xiaohuan Qi1Wei Zhao2Meng Qian3Hui Bi4Fuqiang Huang5State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai ChinaAbstract Large surface area, high conductivity, and rich active site of carbon electrode materials are necessary characteristics for energy storage devices. However, high conductivity and high nitrogen doping of carbon electrode materials are difficult to coordinate. Here, a facile method via the carbonization of nitrogen‐containing Schiff base polymer has been developed to prepare high conductivity and high nitrogen‐doped hierarchical porous carbon. The organic components with a benzene ring structure in the polymer promote the formation of more sp2‐graphitized carbon, which is beneficial for the improvement of electrical conductivity. Nitrogen‐doped hierarchical porous carbon calcined at 900°C under the NH3 atmosphere possesses high nitrogen content of 7.48 at%, a large specific surface area of 1613.2 m2/g, and high electrical conductivity of 2.7 S/cm. As electrode materials in an aqueous‐based supercapacitor, nitrogen‐doped hierarchical porous carbon exhibits superior specific capacitance of 385 F/g at 1 A/g as well as excellent rate performance (242 and 215 F/g at a current density of 100 and 200 A/g, respectively). In addition, the specific capacitance of electrode measured in a two‐electrode system is 335 F/g at 1 A/g, and the long‐term cycling stability can be achieved with more than 94% initial capacitance after 10 000 cycles. The constructed symmetric supercapacitor delivers high energy density and high power density. The outstanding electrochemical performances combined with the novel and scalable synthetic approach make the nitrogen‐doped hierarchical porous carbon potential electrode material for electrochemical devices.https://doi.org/10.1002/cey2.78hierarchical porous carbonhigh specific surface areanitrogen‐dopedrate performancesupercapacitor |
| spellingShingle | Peng Wang Xiaohuan Qi Wei Zhao Meng Qian Hui Bi Fuqiang Huang Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage Carbon Energy hierarchical porous carbon high specific surface area nitrogen‐doped rate performance supercapacitor |
| title | Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage |
| title_full | Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage |
| title_fullStr | Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage |
| title_full_unstemmed | Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage |
| title_short | Nitrogen‐doped hierarchical few‐layered porous carbon for efficient electrochemical energy storage |
| title_sort | nitrogen doped hierarchical few layered porous carbon for efficient electrochemical energy storage |
| topic | hierarchical porous carbon high specific surface area nitrogen‐doped rate performance supercapacitor |
| url | https://doi.org/10.1002/cey2.78 |
| work_keys_str_mv | AT pengwang nitrogendopedhierarchicalfewlayeredporouscarbonforefficientelectrochemicalenergystorage AT xiaohuanqi nitrogendopedhierarchicalfewlayeredporouscarbonforefficientelectrochemicalenergystorage AT weizhao nitrogendopedhierarchicalfewlayeredporouscarbonforefficientelectrochemicalenergystorage AT mengqian nitrogendopedhierarchicalfewlayeredporouscarbonforefficientelectrochemicalenergystorage AT huibi nitrogendopedhierarchicalfewlayeredporouscarbonforefficientelectrochemicalenergystorage AT fuqianghuang nitrogendopedhierarchicalfewlayeredporouscarbonforefficientelectrochemicalenergystorage |