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层次的英般的CoS2空心微球:自组装和可控制的微波吸收性能

Dongwei Xu¹, Feifan Zhang¹, Huanhuan Guo¹

¹School of Material Science and Engineering, Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou University of Aeronautics Zhengzhou Henan 450046 China xudongwei1029@126.com.

|September 13, 2023

概括

为先进的微波吸收,合成了等级的 dandelion-like 二硫化物 (CoS2) 空洞微球. 这些轻质材料具有出色的吸收能力,宽带有效带宽和耐腐蚀性,可应对电磁污染.

科学领域:

材料科学材料科学材料科学
纳米技术纳米技术
电磁学电磁学电磁学电磁学

背景情况:

对电磁辐射和干扰的越来越多的担忧需要开发有效的微波吸收材料 (MAM).
在低填料含量下实现宽带,轻量级和耐腐蚀的高性能MAM仍然是一个重大挑战.

研究的目的:

为了合成等级的 dandelion-like 二硫化物 (CoS2) 空洞微球.
评估它们作为高性能微波吸收器的潜力.

主要方法:

用于材料合成的Solvothermal-hydrothermal蚀刻-in situ火山化工艺被使用.
描述包括分析结构形态,组成和电磁性能.
测试了微波吸收特性,重点关注反射损失 (RL) 和有效吸收带宽 (EAB).

主要成果:

合成的CoS2空心微球保持了结构完整性.
一个带有25 wt%负载的样本显示出最小反射损失 (RLmin) 为-47.3 dB,有效吸收带宽 (EAB) 为8.4 GHz,厚度为3.3 mm.
在9.0-18.0 GHz范围内,最大的EAB (RL<-10dB) 达到9.0GHz,匹配厚度为3.2mm.

结论:

层次的英般的CoS2空心微球显示出出色的微波吸收能力.
可调整复杂的电容性和增强的阻抗匹配有助于它们的卓越性能.
这些CoS2微球显示出减轻电磁污染的重大前景.

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