期刊
CARBON
卷 193, 期 -, 页码 182-194出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2022.03.017
关键词
MXene; ZIF-67; Co@C/MXene; Microwave absorption; RCS simulation
资金
- National Natural Science Foundation of China [52102370, 51972029, 52001318]
- Zhejiang Provincial Key Research and Development Program [2021C01033]
- Ningbo Natural Science Foundation [2021J225, 2021J219]
Co@C/MXene-based composite materials with 0D/1D/2D architectures were fabricated to enhance microwave attenuation performance and optimize impedance matching properties. The Co@C/M-10 absorber exhibited excellent microwave attenuation performance and wide absorption bandwidth under specific thickness.
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 Co@C/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 Co@CNTs were in situ grown on Ti3C2Tx MXene nanosheets. By changing the amount of Ti3C2Tx MXene to optimize the impedance matching properties, the Co@C/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 Co@C/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 degrees, the RCS reduction value of Co@C/M - 10 can reach 33.5 dBm(2). This work provides a strategy for synthesizing MXene-based composite materials with tunable electromagnetic attenuation and wide absorption bandwidth performance. (c) 2022 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据