新型炭材料（中英文）2026，Vol.41Issue(3)：568-582,15.DOI:10.1016/S1872-5805(26)61077-3
具有高效电磁波吸收性能的CoFe/C@聚吡咯复合材料的制备
Fabrication of CoFe/C@polypyrrole composites with efficient electro-magnetic wave absorption properties
摘要
Abstract
Recently,increasingly severe electromagnetic radiation has caused harm to precision equipment and human health,which re-quires the development of effective electromagnetic wave(EMW)absorption materials.These materials require both a strong absorp-tion and a broad bandwidth at low filling rates and small thicknesses.To meet this requirement we have constructed a cobalt-iron/carbon@polypyrrole(CoFe/C@PPy)composite by a two-step synthesis process.The first is the fabrication of magnetic CoFe/C fibers,followed by their coating with a PPy layer with a controlled thickness.This combination of materials results in a magnetic loss from CoFe/C and a dielectric loss from PPy which improves both im-pedance matching and EMW dissipation.An optimized material has a PPy layer with a thickness of 2.0 mm and a loading of 10%and has a minimum reflection loss(RLmin)of-45.6 dB at 14.64 GHz,and the corresponding effective absorption bandwidth is 5.12 GHz.Further-more,CST Studio simulations and far-field radar cross-section(RCS)analysis validate its practical use,showing a notable RCS reduction of up to 37.5 dBm2 for a perfect electric conductor.关键词
电磁波吸收/导电损耗/界面极化/CoFe合金/结构设计Key words
Electromagnetic wave absorption/Conductive loss/Interface polarization/CoFe alloy/Structural design分类
通用工业技术引用本文复制引用
屈琳,王亚婧,原文佩,刘鹏宇,张妍兰,王永祯..具有高效电磁波吸收性能的CoFe/C@聚吡咯复合材料的制备[J].新型炭材料（中英文）,2026,41(3):568-582,15.基金项目
This research was supported by the National Nat-ural Science Foundation of China(52371231),Key R&D Program of Shanxi Province(20230204020 1008),and Natural Science Foundation of Shanxi Province(202203021212205).国家自然科学基金(52371231) （52371231）
山西省重点研发计划(202302040201008)以及山西省自然科学基金(202203021212205). （202302040201008）
