当前位置：
X-MOL 学术
›
ACS Appl. Nano Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Flexible Cobalt-Embedded Carbon Nanosheet/Carbon Nanofiber Composites for Enhanced Electromagnetic Wave Absorption Performance
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-03-30 , DOI: 10.1021/acsanm.2c05525 Bo Wen 1 , Ziyi Zhou 1 , Silan Wang 2 , Hongyang Zhao 1 , Guorui Yang 1 , Jiuhong Wang 3 , Jiaxi Niu 1 , Yunzi Miao 1 , Zhijie Zhang 2 , Wei Yan 2 , Shujiang Ding 1
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2023-03-30 , DOI: 10.1021/acsanm.2c05525 Bo Wen 1 , Ziyi Zhou 1 , Silan Wang 2 , Hongyang Zhao 1 , Guorui Yang 1 , Jiuhong Wang 3 , Jiaxi Niu 1 , Yunzi Miao 1 , Zhijie Zhang 2 , Wei Yan 2 , Shujiang Ding 1
Affiliation
|
The rational design of multicomponent materials with tunable microstructures has demonstrated remarkable advantages for attenuating electromagnetic waves (EMWs). Herein, flexible Co-embedded carbon nanosheets/carbon nanofibers (Co@CNSs@CNFs) with three-dimensional structures were prepared by the combination of electrospinning and in situ deposition methods, which demonstrate a high specific surface area (62.2 m2 g–1) and rich interfaces between the cobalt nanoparticle and the carbon matrix confirmed by the investigations of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). As a result, the products achieved a broad effective absorption bandwidth of 5.6 GHz and a strong reflection loss of −76.5 dB with a thin thickness of 2.2 mm. It is found that the affluent electromagnetic wave transmission paths and enhanced interfacial polarization loss are the primary reason for the improvement of the EMW absorption performance. This work proposes a tailored way to fabricate the assembled three-dimensional structure and boost EMW absorption through the synergistic effect of multiple polarization loss mechanisms.
中文翻译：
用于增强电磁波吸收性能的柔性钴嵌入碳纳米片/碳纳米纤维复合材料
具有可调微结构的多组分材料的合理设计在衰减电磁波 (EMW) 方面显示出显着优势。在此，通过结合静电纺丝和原位沉积方法制备了具有三维结构的柔性 Co 嵌入碳纳米片/碳纳米纤维 (Co@CNSs@CNFs)，具有高比表面积 (62.2 m 2 g –1) 和钴纳米颗粒与碳基质之间丰富的界面，通过扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 的研究得到证实。因此，产品实现了 5.6 GHz 的宽有效吸收带宽和 −76.5 dB 的强反射损耗，厚度为 2.2 mm。发现丰富的电磁波传输路径和增强的界面极化损耗是提高电磁波吸收性能的主要原因。这项工作提出了一种量身定制的方法来制造组装的三维结构，并通过多种极化损耗机制的协同效应促进 EMW 吸收。
更新日期：2023-03-30
中文翻译：
用于增强电磁波吸收性能的柔性钴嵌入碳纳米片/碳纳米纤维复合材料
具有可调微结构的多组分材料的合理设计在衰减电磁波 (EMW) 方面显示出显着优势。在此，通过结合静电纺丝和原位沉积方法制备了具有三维结构的柔性 Co 嵌入碳纳米片/碳纳米纤维 (Co@CNSs@CNFs)，具有高比表面积 (62.2 m 2 g –1) 和钴纳米颗粒与碳基质之间丰富的界面，通过扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 的研究得到证实。因此，产品实现了 5.6 GHz 的宽有效吸收带宽和 −76.5 dB 的强反射损耗，厚度为 2.2 mm。发现丰富的电磁波传输路径和增强的界面极化损耗是提高电磁波吸收性能的主要原因。这项工作提出了一种量身定制的方法来制造组装的三维结构，并通过多种极化损耗机制的协同效应促进 EMW 吸收。
京公网安备 11010802027423号