▎ 摘　　要

The core-shell structural design of low-dimensional nanomaterials and the synergistic effect of dielectric and magnetic loss have made a remarkable contribution to the electromagnetic wave absorbing perfor-mance. In this paper, two-dimensional graphene oxide@zero-dimensional polypyrrole/one-dimensional carbonyl iron fiber (GO@PPy/CIF) composites with a core-shell structure were prepared by a facile in-situ chemical oxidative polymerization method, and their electromagnetic properties were systematically stu-died. It is indicated that when the mass ratio of GO@PPy to GO@PPy/CIF was 15 wt%, the optimal reflection loss reached - 53.67 dB at 12.24 GHz with 2.56 GHz of effective absorption bandwidth (RL