Ultra-broadband microwave absorber and high-performance pressure sensor based on aramid nanofiber,polypyrrole and nickel porous aerogel

作     者：Leyi Zhang Hongyu Jin Hanxin Liao Rao Zhang Bochong Wang Jianyong Xiang Congpu Mu Kun Zhai Tianyu Xue Fusheng Wen Leyi Zhang;Hongyu Jin;Hanxin Liao;Rao Zhang;Bochong Wang;Jianyong Xiang;Congpu Mu;Kun Zhai;Tianyu Xue;Fusheng Wen

作者机构：State Key Laboratory of Metastable Materials Science&TechnologyYanshan UniversityQinhuangdao 066004China Key Laboratory for Microstructural Material Physics of Hebei ProvinceSchool of ScienceYanshan UniversityQinhuangdao 066004China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2024年第31卷第8期

页      面：1912-1921页

核心收录：

学科分类：081702[工学-化学工艺] 080202[工学-机械电子工程] 08[工学] 0817[工学-化学工程与技术] 0802[工学-机械工程] 

基　　金：The authors acknowledge the financial support from the National Natural Science Foundation of China(Nos.52071280 and 51972280) the Natural Science Foundation of Hebei Province,China(Nos.E2020203151 and E2022203208) the Research Program of the College Science&Technology of Hebei Province,China(No.ZD2020121) the Cultivation Project for Basic Research and Innovation of Yanshan University,China(No.2021LGZD016) 

主　　题：porous aerogel aramid nanofibers microwave absorbers pressure sensor porous structure 

摘      要：Electronic devices have become ubiquitous in our daily lives,leading to a surge in the use of microwave absorbers and wearable sensor devices across various sectors.A prime example of this trend is the aramid nanofibers/polypyrrole/nickel(APN)aerogels,which serve dual roles as both microwave absorbers and pressure *** this work,we focused on the preparation of aramid nanofibers/polypyrrole(AP15)aerogels,where the mass ratio of aramid nanofibers to pyrrole was 1:*** employed the oxidative polymerization method for the preparation *** this,nickel was thermally evaporated onto the surface of the AP15 aerogels,resulting in the creation of an ultralight(9.35 mg·cm^(-3)).This aerogel exhibited a porous *** introduction of nickel into the aerogel aimed to enhance magnetic loss and adjust impedance matching,thereby improving electromagnetic wave absorption *** minimum reflection loss value achieved was-48.7 dB,and the maximum effective absorption bandwidth spanned 8.42 GHz with a thickness of 2.9 *** impressive metrics can be attributed to the three-dimensional network porous structure of the aerogel and perfect impedance ***,the use of aramid nanofibers and a three-dimensional hole structure endowed the APN aerogels with good insulation,flame-retardant properties,and compression *** under a compression strain of 50%,the aerogel maintained its resilience over 500 *** incorporation of polypyrrole and nickel particles further enhanced the conductivity of the ***,the final APN aerogel sensor demonstrated high sensitivity(10.78 kPa-1)and thermal *** conclusion,the APN aerogels hold significant promise as ultra-broadband microwave absorbers and pressure sensors.