Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance
Honeycomb-like lignin-derived carbon (LC) foams doped with reduced graphene oxide (RGO) are fabricated via unidirectional ice-templating followed by freeze-drying and carbonization. The dimensions, constituent contents, and density of the foams could be easily adjusted. By manipulating the density,...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/85322 http://hdl.handle.net/10220/49345 |
| _version_ | 1811688761801572352 |
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| author | Ma, Daphne Xiu Yun Seyed Ismail Seyed Shahabadi Zeng, Zhihui Zhang, Youfang Che, Boyang Wang, Peiyu Lu, Xuehong |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Ma, Daphne Xiu Yun Seyed Ismail Seyed Shahabadi Zeng, Zhihui Zhang, Youfang Che, Boyang Wang, Peiyu Lu, Xuehong |
| author_sort | Ma, Daphne Xiu Yun |
| collection | NTU |
| description | Honeycomb-like lignin-derived carbon (LC) foams doped with reduced graphene oxide (RGO) are fabricated via unidirectional ice-templating followed by freeze-drying and carbonization. The dimensions, constituent contents, and density of the foams could be easily adjusted. By manipulating the density, high electrical conductivity and good mechanical properties could be achieved at relatively low RGO contents. In addition to the high conductivity and interfaces between LC and RGO, aligned pores also boost electromagnetic interference (EMI) shielding effectiveness (SE) of the foams owing to induced multiple reflections. X-band EMI SE of the LC-based foams with 2-mm thickness could reach 28.5 to 70.5 dB at very low densities. Furthermore, the normalized surface specific SE (SE divided by density and thickness) could be as high as 28750 dB·cm2/g, which is much higher than those of other types of carbon foams and most shielding materials ever reported. With the outstanding EMI shielding performance, good mechanical properties and more sustainable raw material, the biomass-based carbon foams offer promising prospects for lightweight, robust and high-performance EMI shielding materials. |
| first_indexed | 2024-10-01T05:37:21Z |
| format | Journal Article |
| id | ntu-10356/85322 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:37:21Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/853222023-07-14T15:50:56Z Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance Ma, Daphne Xiu Yun Seyed Ismail Seyed Shahabadi Zeng, Zhihui Zhang, Youfang Che, Boyang Wang, Peiyu Lu, Xuehong School of Materials Science & Engineering Carbon Foams DRNTU::Engineering::Materials Shielding Performance Honeycomb-like lignin-derived carbon (LC) foams doped with reduced graphene oxide (RGO) are fabricated via unidirectional ice-templating followed by freeze-drying and carbonization. The dimensions, constituent contents, and density of the foams could be easily adjusted. By manipulating the density, high electrical conductivity and good mechanical properties could be achieved at relatively low RGO contents. In addition to the high conductivity and interfaces between LC and RGO, aligned pores also boost electromagnetic interference (EMI) shielding effectiveness (SE) of the foams owing to induced multiple reflections. X-band EMI SE of the LC-based foams with 2-mm thickness could reach 28.5 to 70.5 dB at very low densities. Furthermore, the normalized surface specific SE (SE divided by density and thickness) could be as high as 28750 dB·cm2/g, which is much higher than those of other types of carbon foams and most shielding materials ever reported. With the outstanding EMI shielding performance, good mechanical properties and more sustainable raw material, the biomass-based carbon foams offer promising prospects for lightweight, robust and high-performance EMI shielding materials. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2019-07-15T07:53:17Z 2019-12-06T16:01:31Z 2019-07-15T07:53:17Z 2019-12-06T16:01:31Z 2018 Journal Article Zeng, Z., Zhang, Y., Ma, D. X. Y., Seyed Ismail Seyed Shahabadi, Che, B., Wang, P., & Lu, X. (2018). Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance. Carbon, 140, 227-236. doi:10.1016/j.carbon.2018.08.061 0008-6223 https://hdl.handle.net/10356/85322 http://hdl.handle.net/10220/49345 10.1016/j.carbon.2018.08.061 en Carbon © 2018 Elsevier. All rights reserved. This paper was published in Carbon and is made available with permission of Elsevier. 34 p. application/pdf |
| spellingShingle | Carbon Foams DRNTU::Engineering::Materials Shielding Performance Ma, Daphne Xiu Yun Seyed Ismail Seyed Shahabadi Zeng, Zhihui Zhang, Youfang Che, Boyang Wang, Peiyu Lu, Xuehong Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| title | Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| title_full | Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| title_fullStr | Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| title_full_unstemmed | Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| title_short | Biomass-based honeycomb-like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| title_sort | biomass based honeycomb like architectures for preparation of robust carbon foams with high electromagnetic interference shielding performance |
| topic | Carbon Foams DRNTU::Engineering::Materials Shielding Performance |
| url | https://hdl.handle.net/10356/85322 http://hdl.handle.net/10220/49345 |
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