Confronting with increasing electromagnetic pollution, traditional microwave absorbing materials have their limitations, such as low yield and long preparation periods. At the same time, it is well established that electromagnetic simulation is an effective technology to enhance work efficiency, which can quickly explore the impedance matching conditions and electromagnetic characteristics to improve absorbing performance. Honeycomb structure has been widely used in the field of microwave absorption due to its light weight, high strength and heat resistance. This structure also possesses the advantages of multiple scattering, which is beneficial to microwave attenuation. In this work, Co/carbon (Co/C) particles with effective absorption bandwidth (EAB) (the band corresponding to the reflection loss value less than −10 dB) of 5.8 GHz were synthesized by a simple hydrothermal method. Whereupon through the high-frequency structure simulator (HFSS) electromagnetic simulation, Co/C absorbers with honeycomb structure were macroscopically designed, achieving an ultra-broad effective absorption bandwidth of 11.6 GHz. Herein, the effective combination of electromagnetic simulation and honeycomb structure design greatly improves the absorption bandwidth of Co/C. This work paves the way for designing microwave absorption materials with broad effective absorption bandwidth.

面对日益严重的电磁污染，传统的吸波材料存在收率低、制备周期长等局限性。同时，众所周知，电磁仿真是一种提高工作效率的有效技术，可以快速探索阻抗匹配条件和电磁特性，以提高吸波性能。蜂窝结构由于具有重量轻、强度高、耐热性好等优点，在微波吸收领域得到了广泛的应用。这种结构还具有多重散射的优点，有利于微波衰减。在这项工作中，Co/碳 (Co/C) 粒子的有效吸收带宽 (EAB)（对应于反射损耗值小于 -10 dB 的频带）为 5。8 GHz 是通过简单的水热法合成的。于是通过高频结构模拟器（HFSS）电磁仿真，宏观设计了具有蜂窝结构的Co/C吸收体，实现了11.6GHz的超宽有效吸收带宽。在此，电磁模拟与蜂窝结构设计的有效结合大大提高了Co/C的吸收带宽。这项工作为设计具有宽有效吸收带宽的微波吸收材料铺平了道路。电磁模拟与蜂窝结构设计的有效结合，大大提高了Co/C的吸收带宽。这项工作为设计具有宽有效吸收带宽的微波吸收材料铺平了道路。电磁模拟与蜂窝结构设计的有效结合，大大提高了Co/C的吸收带宽。这项工作为设计具有宽有效吸收带宽的微波吸收材料铺平了道路。