Hierarchical porous hollow graphitized carbon@MoS2 with wideband EM dissipation capability
| Autor: | Juncen Liu, Zirui Jia, Tianwei Deng, Yutao Zhu, Hualiang Lv, Xiaodi Zhou, Zhihong Yang, Lieji Yang |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Polymers and Plastics Shell (structure) chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Materials Chemistry Wideband Absorption (electromagnetic radiation) Porosity business.industry Mechanical Engineering Metals and Alloys Dissipation 021001 nanoscience & nanotechnology 0104 chemical sciences Core (optical fiber) chemistry Mechanics of Materials Ceramics and Composites Optoelectronics 0210 nano-technology business Electromagnetic absorbers Carbon |
| Zdroj: | Journal of Materials Science & Technology. 83:239-247 |
| ISSN: | 1005-0302 |
| DOI: | 10.1016/j.jmst.2020.12.055 |
| Popis: | Core-shell materials are promising broadband electromagnetic (EM) absorption materials since the highly component manipulation performance, interfacial effect etc. Herein, a well-defined core-shell shaped structure constructed by 2-dimensional MoS2 nanosheets-coated porous hollow carbon has been successfully designed with controlled pore-sizes of the core, adjustable shell content, and structure. By effectively optimizing the parameters for these factors, the as-prepared hierarchical porous hollow C@MoS2 sample enables an ultra-width EM absorption ability (covering 11.4–18.0 GHz) at a thickness of only 2.0 mm. The detailed contributions of each component and structure on the excellent EM absorption capability have been investigated. These encouraging results indicate that the development of core-shell composites with multiple controllable physical factors is of great significance for the future ultra-wideband electromagnetic absorbers. |
| Databáze: | OpenAIRE |
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