Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption  

作　　者：Xiao You Huiying Ouyang Ruixiang Deng Qiuqi Zhang Zhenzhong Xing Xiaowu Chen Qingliang Shan Jinshan Yang Shaoming Dong 

机构地区：[1]State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China [2]Key Laboratory of Inorganic Coating Materials CAS,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China [3]Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China [4]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China [5]School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,People’s Republic of China [6]School of Materials Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,People’s Republic of China [7]University of Chinese Academy of Sciences,Beijing 100039,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第2期533-547,共15页纳微快报（英文版）

基　　金：sponsored by National Natural Science Foundation of China(No.52302121,No.52203386);Shanghai Sailing Program(No.23YF1454700);Shanghai Natural Science Foundation(No.23ZR1472700);Shanghai Post-doctoral Excellent Program(No.2022664).

摘　　要：With vigorous developments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the design of electromagnetic wave absorbers.Herein,a hierarchical porous structure and composite heterogeneous interface are constructed successfully to optimize the electromagnetic loss capacity.The macro–micro-synergistic graphene aerogel formed by the ice template‑assisted 3D printing strategy is cut by silicon carbide nanowires(SiC_(nws))grown in situ,while boron nitride(BN)interfacial structure is introduced on graphene nanoplates.The unique composite structure forces multiple scattering of incident EMWs,ensuring the combined effects of interfacial polarization,conduction networks,and magnetic-dielectric synergy.Therefore,the as-prepared composites present a minimum reflection loss value of−37.8 dB and a wide effective absorption bandwidth(EAB)of 9.2 GHz(from 8.8 to 18.0 GHz)at 2.5 mm.Besides,relying on the intrinsic high-temperature resistance of SiC_(nws) and BN,the EAB also remains above 5.0 GHz after annealing in air environment at 600℃ for 10 h.

关 键 词：Hierarchical porous structure Interface High-temperature resistance Graphene aerogel composites Electromagnetic wave absorption 

分 类 号：TB332[一般工业技术—材料科学与工程]