Academic Journal
Hollow Gradient-Structured Iron-Anchored Carbon Nanospheres for Enhanced Electromagnetic Wave Absorption
| العنوان: | Hollow Gradient-Structured Iron-Anchored Carbon Nanospheres for Enhanced Electromagnetic Wave Absorption |
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| المؤلفون: | Cao Wu, Jing Wang, Xiaohang Zhang, Lixing Kang, Xun Cao, Yongyi Zhang, Yutao Niu, Yingying Yu, Huili Fu, Zongjie Shen, Kunjie Wu, Zhenzhong Yong, Jingyun Zou, Bin Wang, Zhou Chen, Zhengpeng Yang, Qingwen Li |
| المصدر: | Nano-Micro Letters, Vol 15, Iss 1, Pp 1-17 (2022) |
| بيانات النشر: | SpringerOpen, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Technology |
| مصطلحات موضوعية: | Gradient structures, Carbon nanospheres, Electromagnetic wave absorption, Impedance matching, Technology |
| الوصف: | Highlights Microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance. Outstanding reflection loss value (−62.7 dB), broadband wave absorption (6.4 dB with only 2.1 mm thickness) in combination with flexible adjustment abilities were acquired, which is superior to other relative graded distribution structures. This strategy initiates a new method for designing and controlling wave absorber with excellent impedance matching property in practical applications. Abstract In the present paper, a microwave absorber with nanoscale gradient structure was proposed for enhancing the electromagnetic absorption performance. The inorganic–organic competitive coating strategy was employed, which can effectively adjust the thermodynamic and kinetic reactions of iron ions during the solvothermal process. As a result, Fe nanoparticles can be gradually decreased from the inner side to the surface across the hollow carbon shell. The results reveal that it offers an outstanding reflection loss value in combination with broadband wave absorption and flexible adjustment ability, which is superior to other relative graded distribution structures and satisfied with the requirements of lightweight equipment. In addition, this work elucidates the intrinsic microwave regulation mechanism of the multiscale hybrid electromagnetic wave absorber. The excellent impedance matching and moderate dielectric parameters are exhibited to be the dominative factors for the promotion of microwave absorption performance of the optimized materials. This strategy to prepare gradient-distributed microwave absorbing materials initiates a new way for designing and fabricating wave absorber with excellent impedance matching property in practical applications. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2311-6706 2150-5551 |
| Relation: | https://doaj.org/toc/2311-6706; https://doaj.org/toc/2150-5551 |
| DOI: | 10.1007/s40820-022-00963-w |
| URL الوصول: | https://doaj.org/article/2077d354f8f74855aff9f795e71252ee |
| رقم الانضمام: | edsdoj.2077d354f8f74855aff9f795e71252ee |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 23116706 21505551 |
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| DOI: | 10.1007/s40820-022-00963-w |