The rational structure-effect relationship design of microwave absorption devices provides tremendous potential for the elimination of electromagnetic radiation contamination. Here, we report on the efficient microwave absorbers (MA) consisting of TiN/Fe₂Ni₂N nanoribbons (NRs) and nanoparticles (NPs) as a functional MA filler. The cross-linked network and multiple heterogeneous interface polarization of TiN/Fe₂Ni₂N NRs contributes to improved conductance loss and polarization loss and is favorable for obtaining the lightweight MA absorber at a low filler content of 15 wt%. As a comparison, due to the enhanced permeability and balanced permittivity, the maximum reflection loss of the NPs filled absorber can reach −31.9 dB at a filler thickness of 1.3 mm at a high filler content of 50 wt%. This work deepens the understanding for designing the high-performance MA through tuning and optimizing the dielectric and magnetic loss.

微波吸收装置合理的构效关系设计为消除电磁辐射污染提供了巨大的潜力。在这里，我们报告了由 TiN/Fe ₂ Ni ₂ N 纳米带 (NRs) 和纳米颗粒 (NPs)组成的高效微波吸收剂 (MA ) 作为功能性 MA 填料。TiN/Fe ₂ Ni ₂的交联网络和多重异质界面极化N NRs 有助于改善电导损失和极化损失，并且有利于在 15 wt% 的低填料含量下获得轻质 MA 吸收剂。作为比较，由于增强的渗透性和平衡的介电常数，在 1.3 mm 的填料厚度和 50 wt% 的高填料含量下，NPs 填充的吸收器的最大反射损耗可以达到 -31.9 dB。这项工作通过调整和优化介电和磁损耗加深了对设计高性能 MA 的理解。