整合原子铁-N-RGO 的电特性和极化损耗调制，提高电磁波吸收能力

IF 26.6 1区材料科学 Q1 Engineering Nano-Micro Letters Pub Date : 2024-10-18 DOI:10.1007/s40820-024-01518-x

Kaili Zhang, Yuefeng Yan, Zhen Wang, Guansheng Ma, Dechang Jia, Xiaoxiao Huang, Yu Zhou

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引用次数: 0

摘要

亮点成功合成了嵌入石墨烯的单原子 Fe-N4 位点，从而发挥了石墨烯的介电性能。金属氮掺杂还原氧化石墨烯的吸收机制主要包括偶极极化增强、界面极化、传导损耗和缺陷诱导极化。结果表明，该材料的反射损耗为 - 74.05 dB（2.0 mm），有效吸收带宽为 7.05 GHz（1.89 mm，填充物含量仅为 1 wt%）。

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Integration of Electrical Properties and Polarization Loss Modulation on Atomic Fe–N-RGO for Boosting Electromagnetic Wave Absorption

Highlights

Single-atom Fe–N₄ sites embedded into graphene were successfully synthesized to exert the dielectric properties of graphene.
The absorption mechanisms of metal-nitrogen doping reduced graphene oxide mainly include enhanced dipole polarization, interface polarization, conduction loss and defect-induced polarization.
Excellent reflection loss of − 74.05 dB (2.0 mm) and broad effective absorption bandwidth of 7.05 GHz (1.89 mm, with filler loading only 1 wt%) were obtained.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.