Large-Scale Nanofiber Manufacturing| Constructing magnetic carbon nanofibercomposites with magnetic-electricsynergistic loss effects for efficientmicrowave absorption

Composites Part B: Engineering (IF 12.7): Magnetic Carbon Nanofiber Composites with Magneto-Electric Synergistic Loss Effect for Enhanced Microwave Absorption Efficiency

Challenge: Developing high-performance electromagnetic wave absorbing materials is urgently needed to address current electromagnetic interference and pollution, but simultaneously achieving strong absorption and broad microwave absorption bandwidth remains challenging.

Approach: Academician Yu Jianyong and Professor Yan Jianhua from Donghua University reported a polypyrrole-modified magnetic carbon nanofiber (CNF) absorber loaded with core-shell Fe3C@Fe3O4 nanoparticles, exhibiting a magneto-electric synergistic loss effect for efficient microwave absorption.

Innovation 1: The hierarchical heterogeneous structure and isotropic 3D network facilitate high absorption and loss capabilities through synergistic effects of impedance matching, multiple polarization, and magneto-electric coupling.

Innovation 2: The designed microwave absorber with only 2.4 mm thickness and 6 wt% filler loading achieves a minimum reflection loss of -55.74 dB and an absorption bandwidth of 7.84 GHz, covering the entire Ku-band.

Innovation 3: Additionally, the microwave absorber demonstrates a high radar cross-section attenuation value of 28.04 dB m2 in the vertical direction, showing excellent electromagnetic wave attenuation capability for practical applications.

DOI: https://doi.org/10.1016/j.compositesb.2025.112551