Hierarchical structure Fe@CNFs@Co/C elastic aerogels with intelligent electromagnetic wave absorption
Hongwei Zhou,
Ying Lin,
Yongzhen Ma,
Luyao Han,
Zhixin Cai,
Yan Cheng,
Qibin Yuan,
Wenhuan Huang,
Haibo Yang,
Renchao Che
Affiliations
Hongwei Zhou
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Ying Lin
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Yongzhen Ma
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Luyao Han
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Zhixin Cai
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Yan Cheng
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Qibin Yuan
School of Electronic Information & Artificial Intelligence, Shaanxi University of Science and Technology Xi'an People's Republic of China
Wenhuan Huang
School of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Haibo Yang
Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials School of Materials Science and Engineering, Shaanxi University of Science and Technology Xi'an People's Republic of China
Renchao Che
Department of Materials Science and Collaborative Innovation Center of Chemistry for Energy Materials, Laboratory of Advanced Materials Fudan University Shanghai People's Republic of China
Abstract Developing intelligent electromagnetic wave (EMW) absorption materials with real‐time response‐ability is of great significance in complex application environments. Herein, highly compressible Fe@CNFs@Co/C elastic aerogels were assembled through the electrospinning method, achieving EMW absorption through pressure changes. By varying the pressure, the effective absorption bandwidth (EAB) of Fe@CNFs@Co/C elastic aerogels shows continuous changes from low frequency to high frequency. The EAB of Fe@CNFs@Co/C elastic aerogels is 14.4 GHz (3.36–17.76 GHz), which covers 90% of the range of S/C/X/Ku bands. The theoretical simulation indicates that the external pressure prompts a reduction in the spacing between the fiber layers in the aerogels and facilitates the formation of a 3D conductive network with enhanced attenuation ability of EMW. The uniform distribution of metal particles and appropriate layer spacing can effectively optimize the impedance matching to achieve the best EMW absorption performance. This work state clearly that the hierarchically assembled elastic aerogels composed of metal–organic frameworks (MOFs) derivatives and carbon fibers are ideal dynamic EMW absorption materials for intelligent EMW response.
