Multi‐interface engineering of FeS 2 /C/MoS 2 with core–shell structure for superior microwave absorption performance

Abstract Heterojunction and morphology control assume a significant part in adjusting the intrinsic electromagnetic properties of absorbers to acquire outstanding microwave absorption (MA) performance, but this still faces huge challenges. Herein, FeS 2 /C/MoS 2 composite with core–shell structure was successfully designed and prepared via a multi‐interface engineering. MoS 2 nanosheets with 1T and 2H phases are coated on the outside of FeS 2 /C to form a porous interconnected structure that can optimize the impedance matching characteristics and strengthen the interfacial polarization loss capacity. Remarkably, as‐fabricated FCM‐3 harvests a broad effective absorption bandwidth (EAB) of 5.12 GHz and a minimum reflection loss (RL min ) value of −45.1 dB. Meanwhile, FCM‐3 can accomplish a greatest radar cross section (RCS) reduction value of 18.52 dB m 2 when the detection angle is 0°. Thus, the convenient computer simulation technology (CST) simulations and encouraging accomplishments provide a novel avenue for the further development of efficient and lightweight MA materials.