材料科学
微波食品加热
反射损耗
衰减
复合数
阻抗匹配
吸收(声学)
光电子学
带宽(计算)
雷达截面
纳米技术
复合材料
电阻抗
散射
光学
电气工程
电信
计算机科学
物理
工程类
作者
Zhe Zou,Mingqiang Ning,Zhenkuang Lei,Xueheng Zhuang,Guoguo Tan,Jianhua Hou,Hui Xu,Qikui Man,Jingbo Li,Run-Wei Li
出处
期刊:Carbon
[Elsevier]
日期:2022-06-01
卷期号:193: 182-194
被引量:109
标识
DOI:10.1016/j.carbon.2022.03.017
摘要
Ti3C2Tx is considered a candidate for high-efficiency microwave absorption materials due to its adjustable electrical conductivity, low density and high specific surface area in recent years. However, the single absorption mechanism could not meet the practical requirements as the functional microwave absorbers. Herein, 0D/1D/2D architectures of [email protected]/MXene with 0D Co nanoparticles, 1D carbon nanotubes (CNTs) and 2D Ti3C2Tx MXene nanosheets were rationally fabricated to enhance the microwave attenuation performance, in which [email protected] were in situ grown on Ti3C2Tx MXene nanosheets. By changing the amount of Ti3C2Tx MXene to optimize the impedance matching properties, the [email protected]/M − 10 absorber exhibits excellent microwave attenuation performance with a minimum reflection loss of −50.5 dB at 5.9 GHz under a thickness of 4.0 mm. Meanwhile, the maximum effective absorption bandwidth (<−10 dB) of [email protected]/M − 10 absorber can reach 5.8 GHz under 2.0 mm. The remarkable absorption performance can be ascribed to the synergistic effects of interface polarizations and magnetic loss. Moreover, the radar cross section (RCS) simulation was also performed via CST. Under the incident angle of 0°, the RCS reduction value of [email protected]/M − 10 can reach 33.5 dBm2. This work provides a strategy for synthesizing MXene-based composite materials with tunable electromagnetic attenuation and wide absorption bandwidth performance.
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