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Abstract:High-absorption-capacity electromagnetic wave absorbing materials are essential to counteract electromagnetic wave hazards to human health, electromagnetic pollution and military security. However, challenges remain in realizing cost-effectiveness and tuning the absorption performance. In order to seek a rational design of nanostructured absorbers, this study employs a multicomponent composite design that exhibits satisfactory electromagnetic wave absorption properties by imparting a synergistic effect on the magnetic medium. It remains a challenge to efficiently build up the structure of multicomponent materials and fully utilize the advantages of each component. Inspired by natural biomass, in this study, wood was used as a raw material, and highperformance Ni:Fe(4) = 3:2 loaded porous carbon composites were successfully prepared by utilizing the carbonization treatment process with hydrothermal and other processes. In the preparation process, due to the exquisite structure design, it has rich heterogeneous interface structure, excellent impedance matching performance and magnetic medium coordination system, and also shows a iety of electromagnetic wave loss mechanisms. Due to these advantages, the obtained optimal absorber exhibits excellent electromagnetic wave absorption performance, with a reflection loss minimum of -62.235 dB at a thickness of only 2.42 mm. This study presents a reliable strategy for the design of multicomponent composites, giving unique ideas and insights into the design of biomass-based electromagnetic wave absorbing materials.
Volume:507
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Translation or Not:no