Transition metal oxides because of their excellent dielectric properties have been population for electromagnetic wave absorption application. In this paper, through two-step synthesis, hollow CoSnO₃ was in-situ growth between layers of self-assembled flower-like ZnCo₂O₄ in the solvothermal process. The multi-layer sheet structure of ZnCo₂O₄ nanoflowers provides growth space for CoSnO₃, which can increase interface polarization and natural resonance. Hybrid structure expands the propagation path of electromagnetic waves and the times of reflections and scattering. By adjusting the content of the growing process of CoSnO₃, the maximum reflection loss (RL) at 12.4 GHz was −56.0 dB, and the wide effective absorption bandwidth (EAB) of 6.24 GHz (RL < −10 dB) was obtained at a thin matching thickness of 2.6 mm ZnCo₂O₄@CoSnO₃ composites showed satisfactory impedance matching in the frequency range of 2–18 GHz. Therefore, ZnCo₂O₄@CoSnO₃ composites provides a new research idea for electromagnetic wave absorption in morphology designed.

过渡金属氧化物因其优异的介电性能而被电磁波吸收应用所取代。在本文中，通过两步合成，在溶剂热过程中，空心CoSnO ₃在自组装花状ZnCo ₂ O ₄层之间原位生长。ZnCo ₂ O ₄纳米花的多层片状结构为CoSnO ₃提供了生长空间，可以增加界面极化和自然共振。混合结构扩展了电磁波的传播路径以及反射和散射的时间。通过调整CoSnO ₃的生长过程的含量，在12.4 GHz处的最大反射损耗（RL）为-56.0 dB，并且在2.6 mm ZnCo ₂ O ₄ @的薄匹配厚度下获得了6.24 GHz的宽有效吸收带宽（EAB）（RL <-10 dB）。CoSnO ₃复合材料在2-18 GHz的频率范围内显示出令人满意的阻抗匹配。因此，ZnCo ₂ O ₄ @CoSnO ₃复合材料为电磁波吸收的形态学研究提供了新的思路。