论文成果
Construction of SiCNWS@NiCo2O4@PANI 1D hierarchical nanocomposites toward high-efficiency microwave absorption
- 发布时间：2023-10-19
- 点击次数：
- 关键字：ELECTROMAGNETIC-WAVE ABSORPTION; SILICON-CARBIDE NANOWIRES; PERFORMANCE; NANOPARTICLES; COMPOSITE; AEROGELS; NICO2O4
- 摘要：Developing a novel electromagnetic wave absorbing material with excellent absorption properties is an optimal solution to deal with increasingly serious electromagnetic radiation and pollution. Herein, the SiCNWS@Ni-Co2O4@PANI one dimensional (1D) hierarchical nanocomposites were successfully prepared through modifying NiCo2O4 nanosheets and PANI coatings on the surface of the as-prepared SiC nanowires. Under the synergistic contribution of the peculiar hierarchical microstructure, diverse components and heterogeneous interface, the dipole polarization and polarization relaxation of the SiCNWS@NiCo2O4@PANI 1D hierarchical nanocomposites were enhanced greatly, which aroused stronger attenuation capacity and better impedance matching, and further obtained high-efficiency electromagnetic wave absorption properties. The minimum reflection loss value of-53.74 dB was achieved at a matching thickness of 1.96 mm, meanwhile, the widest effective absorption band of 4.16 GHz was measured at an ultra-thin matching thickness of 1.18 mm, suggesting that the nanocomposites could be an attractive candidate electromagnetic wave absorbing material. According to systematic character-ization, a reasonable electromagnetic wave loss mechanism was proposed to elucidate the attenuation modes of the incident electromagnetic wave.
- 卷号：592
- 期号：
- 是否译文：否
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