A broadband and strong microwave absorption of Ti3C2Tx MXene/PPy composites with a core-shell structure

被引：22
作者：
Lei, Yanhua [1 ]
Ding, Mengchao [1 ]
Wu, Haikun [2 ]
Yin, Di [3 ]
Li, Yang [2 ]
Jiang, Bochen [1 ]
Sun, Kai [1 ]
Zhang, Yuliang [1 ]
Du, Hailiang [4 ]
机构：
[1] Shanghai Maritime Univ, Inst Marine Mat Sci & Engn, Shanghai, Peoples R China
[2] City Univ Hong Kong, Dept Chem, Hong Kong, Peoples R China
[3] City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong, Peoples R China
[4] Shanghai Jian Qiao Univ, Coll Mech & Elect Engn, Shanghai, Peoples R China
来源：
SYNTHETIC METALS | 2023年 / 293卷
基金：
上海市自然科学基金;
关键词：
MXene; Core-shell structure; Electromagnetic wave absorption; K u band; ELECTROMAGNETIC-WAVE ABSORPTION; CARBON; NANOPARTICLES; POLARIZATION; BANDWIDTH; COAL;
D O I：
10.1016/j.synthmet.2022.117254
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the layered Ti3C2Tx MXene were coated with polypyrrole particles by an in-situ polymerization method, and their electromagnetic wave absorption performance were systematically studied. The MXene/PPy composites presented an excellent electromagnetic wave absorption performance, the strongest reflection loss can reach - 68 dB at 2.68 mm. Meanwhile, when the thickness is 2.26 mm, the effective absorption bandwidth can reach 6.56 GHz (from 11.44 to 18 GHz), covering the entire Ku band (12-18 GHz). The multiple reflections at the heterogeneous interface, and the synergistic effect between the layered MXene and the conductive polypyrrole network made a combined effect on the optimized absorption. The MXene/PPy composites with a strong electromagnetic wave absorption, wide effective absorption bandwidth and corrosion resistance have a great value in aircraft and vessel fields.
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页数：10
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