Co(3)O(4)/carbon composite nanofibrous membrane enabled high-efficiency electromagnetic wave absorption.

Co(3)O(4)/carbon composite nanofibrous membrane enabled high-efficiency electromagnetic wave absorption.
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Co3O4/碳复合纳米纤维膜实现高效电磁波吸收

DOI:
10.1038/s41598-018-30871-2
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发表时间:
2018-08-17
期刊:
影响因子:
4.6
通讯作者:
Ding B
Ding B
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Abdalla I;Shen J;Yu J;Li Z;Ding B

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电磁(EM)波吸收材料已经由各种材料制成,诸如导电聚合物、碳基纳米结构和磁性金属氧化物。然而,开发具有宽频率范围的轻质高效电磁波吸收材料仍然是一个巨大的挑战。在此,我们报告了一种可扩展的策略,以创建Co 3 O 4/碳复合纳米纤维膜的静电纺丝技术,然后稳定和碳化过程。对于2 mm厚的层,在13.76 GHz处达到36.27 dB的最佳反射损耗(RL)值。在4.5-14.4 GHz范围内,通过选择合适的吸收层厚度(1 ~ 5 mm),可以实现超过−20 dB的RL。Co 3 O 4/碳复合纳米纤维膜有望成为轻质、增强型电磁波吸收材料。该研究为设计宽频段的新型电磁波吸收材料提供了一种创新和有效的方法。
Electromagnetic (EM) wave absorbing materials have been fabricated from diverse materials such as conductive polymers, carbon based nanostructures and magnetic metal oxides. Nevertheless, it has remained a great challenge to develop lightweight and high-efficiency EM wave absorbing materials with a broad frequency range. Herein, we report a scalable strategy to create Co3O4/carbon composite nanofibrous membrane by electrospinning technique followed by stabilization and carbonization processes. An optimal reflection loss (RL) value of 36.27 dB is reached at 13.76 GHz for a layer of 2 mm thickness. RL exceeding −20 dB can be realized in any interval within the 4.5–14.4 GHz range by selecting a proper thickness of the absorbing layer between 1 and 5 mm. The Co3O4/carbon composite nanofibrous membrane could be well served as promising and attractive candidates for lightweight and enhanced EM wave absorbing materials. This presented research provides an innovative and effective approach to design the novel EM wave absorbing material in a broad frequency range for practical applications.
多孔碳/Co纳米复合材料的电磁波吸收性能
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