Nowadays, metal oxide-based electromagnetic wave absorbing materials have aroused widely attentions in the application of telecommunication and electronics due to their selectable mechanical and outstanding dielectric properties. Herein, the binary ZnO/NiCo₂O₄ nanoparticles were successfully synthesized via hydrothermal reaction and the electromagnetic wave absorption properties of the composites were investigated in detail. As a result, benefiting from the dielectric loss, the as-obtained ZnO/NiCo₂O₄-7 samples possessed a minimum reflection loss value of −33.49 dB at 18.0 GHz with the thickness of 4.99 mm. This work indicates that ZnO/NiCo₂O₄ composites have the promising candidate applications in electromagnetic wave absorption materials in the future.

如今，基于金属氧化物的电磁波吸收材料由于其可选择的机械性能和优异的介电性能，在电信和电子领域的应用引起了广泛关注。在此，通过水热反应成功合成了二元ZnO/NiCo ₂ O ₄纳米粒子，并详细研究了复合材料的电磁波吸收性能。因此，受益于介电损耗，所获得的 ZnO/NiCo ₂ O ₄ -7 样品在 18.0 GHz 下具有 -33.49 dB 的最小反射损耗值，厚度为 4.99 mm。这项工作表明 ZnO/NiCo ₂ O ₄ 复合材料在未来电磁波吸收材料中具有广阔的应用前景。