▎ 摘　　要

In consideration of the growing electromagnetic wave (EMW) pollution and interference, it is of crucial and imperative significance to develop high-efficiency EMW absorption materials. Herein, hierarchical hybrid network of MoS2@poly (3, 4-ethylenedioxythiophene) (PEDOT)/reduced graphene oxide (rGO) were successfully constructed and fabricated through the combination of oxidative polymerization and microwave-irradiated thermal reduction. The original defects in graphene oxide (GO) could be in situ repaired by introducing carbon source, and the rational regulation of polarization relaxation and conduc-tivity of composites could be achieved. Profiting from the good impedance matching, ameliorated con-ductivity and enhanced dipole polarization as well as interfacial polarization by introducing GO/ defect-recovered rGO and conductive PEDOT, both the MoS2@PEDOT/GO and MoS2@PEDOT/rGO compos-ites exhibited outstanding EMW absorption performances. In details, the minimum reflection loss (RLmin) and effective absorption bandwidth (EAB) of MoS2@PEDOT/GO can reach-48.65 dB at 4.5 mm, and 6.48 GHz (11.52-18 GHz) at 2.2 mm, respectively. And the EAB of MoS2@PEDOT/rGO can reach 7.04 GHz (10.8-17.84 GHz) with an optimized RLmin of-32.41 dB at 2.1 mm under 20 wt% filler loading. Therefore, these composites can be regarded as competitive candidates for lightweight and high-efficient EMW absorbers. (c) 2022 Elsevier Inc. All rights reserved.