Enhanced Microwave Absorbing Ability of Carbon Fibers with Embedded FeCo/CoFe2O4 Nanoparticles
Enhanced Microwave Absorbing Ability of Carbon Fibers with Embedded FeCo/CoFe2O4 Nanoparticles
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DOI：
10.1021/acsami.1c09430
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发表时间：
2021-07-22
影响因子：
9.5
通讯作者：
Ji, Guangbin
中科院分区：
文献类型：
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作者：
Chen, Jiabin;Zheng, Jing;Ji, Guangbin
面对日益严重的电磁波污染，电磁波吸收材料的研究是一个有效的解决方案。为了降低传统吸波材料的密度，本工作通过静电纺丝成功制备了 FeCo/CoFe2O4/碳纳米纤维复合材料，用于电磁波衰减应用。得益于界面极化、偶极子极化和磁损耗的损耗能力，复合材料在1.95 mm的厚度下获得了5.0 GHz的带宽和-52.3 dB的吸收峰。更重要的是，通过ANSYS Electronics Desktop 2018（HFSS）计算的复合涂层的雷达散射截面（RCS）减少量可达34.5 dBm（2），并且当入射角大于20度时，RCS值几乎小于-10 dBm（2），表明材料涂层对电磁波具有强大的散射能力。这项工作结合吸波涂层的机理探索和模拟分析，对于吸波材料的发展具有重要意义。
In the face of increasingly severe electromagnetic (EM) wave pollution, the research of EM wave absorbing materials is an effective solution. To reduce the density of traditional absorbing materials, in this work, FeCo/CoFe2O4/carbon nanofiber composites were successfully prepared by electrospinning for the EM wave attenuation application. Benefiting from the loss ability of interface polarization, dipole polarization, and magnetic loss, the composites obtained a bandwidth of 5.0 GHz at a 1.95 mm thickness and an absorption peak of -52.3 dB. More importantly, the radar cross section (RCS) reduction of composite coatings calculated by ANSYS Electronics Desktop 2018 (HFSS) can reach 34.5 dBm(2), and the RCS value is almost less than -10 dBm(2) when the incident angle is greater than 20 degrees, demonstrating great scattering ability of the material coating to EM waves. This work, combined with the exploration of the mechanism and the simulation analysis of the absorbing coating, will be of significance for the development of absorbing materials.