A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture
Abstract Hierarchically porous carbon materials are promising for energy storage, separation and catalysis. It is desirable but fairly challenging to simultaneously create ultrahigh surface areas, large pore volumes and high N contents in these materials. Herein, we demonstrate a facile acid–base en...
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2020-02-01
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| Series: | Nano-Micro Letters |
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| Online Access: | http://link.springer.com/article/10.1007/s40820-020-0389-3 |
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doaj-45f6ed976a654f078239ce1ae30b986b2020-11-25T03:37:12ZengSpringerOpenNano-Micro Letters2311-67062150-55512020-02-0112111910.1007/s40820-020-0389-3A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 CaptureMengyuan Zhou0Yaqian Lin1Huayao Xia2Xiangru Wei3Yan Yao4Xiaoning Wang5Zhangxiong Wu6Particle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityParticle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityParticle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityParticle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityParticle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityParticle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityParticle Engineering Laboratory (CPCIA) and Suzhou Key Laboratory of Green Chemical Engineering, School of Chemical and Environmental Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow UniversityAbstract Hierarchically porous carbon materials are promising for energy storage, separation and catalysis. It is desirable but fairly challenging to simultaneously create ultrahigh surface areas, large pore volumes and high N contents in these materials. Herein, we demonstrate a facile acid–base enabled in situ molecular foaming and activation strategy for the synthesis of hierarchically macro-/meso-/microporous N-doped carbon foams (HPNCFs). The key design for the synthesis is the selection of histidine (His) and potassium bicarbonate (PBC) to allow the formation of 3D foam structures by in situ foaming, the PBC/His acid–base reaction to enable a molecular mixing and subsequent a uniform chemical activation, and the stable imidazole moiety in His to sustain high N contents after carbonization. The formation mechanism of the HPNCFs is studied in detail. The prepared HPNCFs possess 3D macroporous frameworks with thin well-graphitized carbon walls, ultrahigh surface areas (up to 3200 m2 g−1), large pore volumes (up to 2.0 cm3 g−1), high micropore volumes (up to 0.67 cm3 g−1), narrowly distributed micropores and mesopores and high N contents (up to 14.6 wt%) with pyrrolic N as the predominant N site. The HPNCFs are promising for supercapacitors with high specific capacitances (185–240 F g−1), good rate capability and excellent stability. They are also excellent for CO2 capture with a high adsorption capacity (~ 4.13 mmol g−1), a large isosteric heat of adsorption (26.5 kJ mol−1) and an excellent CO2/N2 selectivity (~ 24).http://link.springer.com/article/10.1007/s40820-020-0389-3Porous carbon foamsHierarchical pore structureNitrogen dopingSupercapacitorsCO2 capture |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Mengyuan Zhou Yaqian Lin Huayao Xia Xiangru Wei Yan Yao Xiaoning Wang Zhangxiong Wu |
| spellingShingle |
Mengyuan Zhou Yaqian Lin Huayao Xia Xiangru Wei Yan Yao Xiaoning Wang Zhangxiong Wu A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture Nano-Micro Letters Porous carbon foams Hierarchical pore structure Nitrogen doping Supercapacitors CO2 capture |
| author_facet |
Mengyuan Zhou Yaqian Lin Huayao Xia Xiangru Wei Yan Yao Xiaoning Wang Zhangxiong Wu |
| author_sort |
Mengyuan Zhou |
| title |
A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture |
| title_short |
A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture |
| title_full |
A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture |
| title_fullStr |
A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture |
| title_full_unstemmed |
A Molecular Foaming and Activation Strategy to Porous N-Doped Carbon Foams for Supercapacitors and CO2 Capture |
| title_sort |
molecular foaming and activation strategy to porous n-doped carbon foams for supercapacitors and co2 capture |
| publisher |
SpringerOpen |
| series |
Nano-Micro Letters |
| issn |
2311-6706 2150-5551 |
| publishDate |
2020-02-01 |
| description |
Abstract Hierarchically porous carbon materials are promising for energy storage, separation and catalysis. It is desirable but fairly challenging to simultaneously create ultrahigh surface areas, large pore volumes and high N contents in these materials. Herein, we demonstrate a facile acid–base enabled in situ molecular foaming and activation strategy for the synthesis of hierarchically macro-/meso-/microporous N-doped carbon foams (HPNCFs). The key design for the synthesis is the selection of histidine (His) and potassium bicarbonate (PBC) to allow the formation of 3D foam structures by in situ foaming, the PBC/His acid–base reaction to enable a molecular mixing and subsequent a uniform chemical activation, and the stable imidazole moiety in His to sustain high N contents after carbonization. The formation mechanism of the HPNCFs is studied in detail. The prepared HPNCFs possess 3D macroporous frameworks with thin well-graphitized carbon walls, ultrahigh surface areas (up to 3200 m2 g−1), large pore volumes (up to 2.0 cm3 g−1), high micropore volumes (up to 0.67 cm3 g−1), narrowly distributed micropores and mesopores and high N contents (up to 14.6 wt%) with pyrrolic N as the predominant N site. The HPNCFs are promising for supercapacitors with high specific capacitances (185–240 F g−1), good rate capability and excellent stability. They are also excellent for CO2 capture with a high adsorption capacity (~ 4.13 mmol g−1), a large isosteric heat of adsorption (26.5 kJ mol−1) and an excellent CO2/N2 selectivity (~ 24). |
| topic |
Porous carbon foams Hierarchical pore structure Nitrogen doping Supercapacitors CO2 capture |
| url |
http://link.springer.com/article/10.1007/s40820-020-0389-3 |
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