Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave AbsorptionOA
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.
Xiao You;Huiying Ouyang;Ruixiang Deng;Qiuqi Zhang;Zhenzhong Xing;Xiaowu Chen;Qingliang Shan;Jinshan Yang;Shaoming Dong
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 Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,People’s Republic of ChinaKey Laboratory of Inorganic Coating Materials CAS,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China University of Chinese Academy of Sciences,Beijing 100039,People’s Republic of ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,People’s Republic of ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of ChinaSchool of Materials Science and Engineering,Zhejiang Sci-Tech University,Hangzhou 310018,People’s Republic of ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of ChinaState Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Structural Ceramics and Composites Engineering Research Center,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China
Hierarchical porous structureInterfaceHigh-temperature resistanceGraphene aerogel compositesElectromagnetic wave absorption
《Nano-Micro Letters》 2025 (2)
P.533-547,15
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).
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