Synthesis of Hierarchical CF@Fe 3 O 4 Fibers Decorated with MoS 2 Layers Forming Core-Sheath Microstructure toward Tunable and Efficient Electromagnetic Wave Absorption

• Published in: ACS applied materials & interfaces 2024-01, Vol.16 (4), p.4886-4895
• Main Authors: Han, Xiaopeng, Cai, Huiwu, Wang, Guangheng, Zhang, Shuai, Liu, Xudong, Huang, Ying
• Format: Article
• Language: English
• ISSN: 1944-8244; 1944-8252
• DOI: 10.1021/acsami.3c13623

Hierarchical structural design has been verified as a feasible strategy to fabricate effective electromagnetic wave (EMW) absorbers, so we designed hierarchical core-sheath composites with magnetic particles and dielectric layers. In this work, a hierarchical structure of carbon fiber (CF)@Fe O @MoS (CPDF7-M) was prepared by introducing Fe O and depositing MoS layers on the surface of fibers. Due to the synergistic effects from the CF@Fe O increasing the conductive and magnetic loss and the outer MoS layers improving the impedance matching, the optimal reflection loss ( ) value was -63.1 dB at 2.7 mm and the effective absorption bandwidth (EAB) was 9.1 GHz covering the X and Ku band. Moreover, the EAB values were adjusted with a specific MoS loading at different thicknesses, which provided the necessary reference for the construction of efficient and flexible absorbers in the EMW absorption fields.