Rational design of the components and microstructure is regarded as an efficacious strategy for the high-performance electromagnetic wave absorbing (EMWA) materials. Herein, the CoTe₂@MoS₂ nanocomposites with CoTe₂ nanorods and MoS₂ nanosheets were synthesized via a hydrothermal method. The microstructure and composition of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The CoTe₂@MoS₂ composite was composed of stacked CoTe₂ as the core and intertwined MoS₂ nanosheets as the shell. The electromagnetic parameters of the CoTe₂@MoS₂ composites were investigated by vector network analyzer (VNA). The EMWA property of the composite showed a trend of first increasing and then decreasing with the increasing content of MoS₂. When the mass ratio of MoS₂ and CoTe₂ was 1:1, the CoTe₂@MoS₂ composite exhibited the minimum reflection loss value of −68.10 dB at 4.71 GHz, and the effective absorption bandwidth value might reach 4.64 GHz (13.08–17.72 GHz) at a matching thickness of 1.60 mm with filler loading of 50 wt.%. The extraordinary EMWA property was attributed to the optimized impedance matching, multiple scattering and reflections, dipole polarization, conductive loss, and interfacial polarization. Therefore, the present approach to the design of microstructure and interface engineering offers a crucial way to construct high-performance EMW absorbers.

组件和微结构的合理设计被认为是高性能电磁波吸收（EMWA）材料的有效策略。在此，通过水热法合成了具有CoTe 2 纳米棒_和MoS ₂纳米片的CoTe ₂ @MoS 2 纳米复合_材料。通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、能量色散 X 射线光谱 (EDS)、透射电子显微镜 (TEM) 和 X 射线光电子能谱 (XPS) 对样品的微观结构和成分进行了表征). CoTe ₂ @MoS _{2复合材料由堆叠的CoTe 2}为核心和相互缠绕的MoS ₂组成纳米片作为外壳。通过矢量网络分析仪（VNA）研究了CoTe ₂ @MoS ₂复合材料的电磁参数。_{随着MoS 2}含量的增加，复合材料的EMWA性能呈现出先升高后降低的趋势。_{当MoS 2}和CoTe ₂的质量比为1:1时，CoTe ₂ @MoS ₂复合材料在 4.71 GHz 时表现出最小反射损耗值 -68.10 dB，有效吸收带宽值在 1.60 mm 的匹配厚度和 50 wt.% 的填料负载下可能达到 4.64 GHz（13.08–17.72 GHz）。非凡的 EMWA 特性归因于优化的阻抗匹配、多次散射和反射、偶极极化、传导损耗和界面极化。因此，目前的微观结构和界面工程设计方法为构建高性能 EMW 吸收器提供了重要途径。