Optimized impedance matching and enhanced attenuation by heteroatoms doping of yolk-shell CoFe2O4@HCN as highly efficient microwave absorbers
文献类型：期刊论文
| 作者 | C. H. Wan, J. Y. Wang, Z. X. Li, S. S. Yu, X. Y. Wang and H. W. Tian |
| 刊名 | Ceramics International
 |
| 出版日期 | 2023 |
| 卷号 | 49期号:13页码:21613-21623 |
| ISSN号 | 0272-8842 |
| DOI | 10.1016/j.ceramint.2023.03.297 |
| 英文摘要 | Microwave absorbing (MA) materials with yolk-shell structures have been extensively studied in impedance matching. However, the impedance matching achieved by the complementary effect of the core and the shell does not determine the reflection of the microwaves upon the occurrence at the first incidence. The interaction between the outer layer of materials and the electromagnetic waves significantly impacts the MA properties of materials. In this study, the impedance matching improvement method of the shell structure was further explored by preparing CoFe2O4@HCN (honeycomb carbon with N-doping) through the hydrothermal method followed by hydrolysis, polymerization, etching, and annealing. The resulting structure with heteroatoms doping provided the novel CoFe2O4@HCN with excellent impedance matching and multiple loss mechanisms contributing to MA process. The absorber with a filler loading of 40% exhibited an RLmin of -68.03 dB with a matching thickness of 2.5 mm. The efficient absorbing bandwidth reached 5.92 GHz (a change from 11.92 to 17.84 GHz) at 1.99 mm thickness. Interestingly, these findings look promising for future synthesis and application of yolk-shell structure microwave absorbers. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/67907]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | C. H. Wan, J. Y. Wang, Z. X. Li, S. S. Yu, X. Y. Wang and H. W. Tian. Optimized impedance matching and enhanced attenuation by heteroatoms doping of yolk-shell CoFe2O4@HCN as highly efficient microwave absorbers[J]. Ceramics International,2023,49(13):21613-21623. |
| APA | C. H. Wan, J. Y. Wang, Z. X. Li, S. S. Yu, X. Y. Wang and H. W. Tian.(2023).Optimized impedance matching and enhanced attenuation by heteroatoms doping of yolk-shell CoFe2O4@HCN as highly efficient microwave absorbers.Ceramics International,49(13),21613-21623. |
| MLA | C. H. Wan, J. Y. Wang, Z. X. Li, S. S. Yu, X. Y. Wang and H. W. Tian."Optimized impedance matching and enhanced attenuation by heteroatoms doping of yolk-shell CoFe2O4@HCN as highly efficient microwave absorbers".Ceramics International 49.13(2023):21613-21623. |
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