Mixed‑Dimensional Assembly Strategy to Construct Reduced Graphene Oxide/Carbon Foams Heterostructures for Microwave Absorption,Anti‑Corrosion and Thermal Insulation  

作　　者：Beibei Zhan Yunpeng Qu Xiaosi Qi Junfei Ding Jiao‑jing Shao Xiu Gong Jing‑Liang Yang Yanli Chen Qiong Peng Wei Zhong Hualiang Lv 

机构地区：[1]College of Physics,Guizhou Province Key Laboratory for Photoelectrics Technology and Application,Guizhou University,Guiyang City 550025,People’s Republic of China [2]College of Materials and Metallurgy,Guizhou University,Guiyang City 550025,People’s Republic of China [3]National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology,Nanjing University,Nanjing 210093,People’s Republic of China [4]Department of Materials Science and Laboratory of Advanced Materials,Fudan University,Shanghai 200433,People’s Republic of China

出　　处：《Nano-Micro Letters》2024年第11期1-18,共18页纳微快报（英文版）

基　　金：provided by Guizhou Provincial Science and Technology Projects for Platform and Talent Team Plan(GCC[2023]007);Fok Ying Tung Education Foundation(171095);National Natural Science Foundation of China(11964006).

摘　　要：Considering the serious electromagnetic wave(EMW)pollution problems and complex application condition,there is a pressing need to amalgamate multiple functionalities within a single substance.However,the effective integration of diverse functions into designed EMW absorption materials still faces the huge challenges.Herein,reduced graphene oxide/carbon foams(RGO/CFs)with two-dimensional/three-dimensional(2D/3D)van der Waals(vdWs)heterostructures were meticulously engineered and synthesized utilizing an efficient methodology involving freeze-drying,immersing absorption,secondary freeze-drying,followed by carbonization treatment.Thanks to their excellent linkage effect of amplified dielectric loss and optimized impedance matching,the designed 2D/3D RGO/CFs vdWs heterostructures demonstrated commendable EMW absorption performances,achieving a broad absorption bandwidth of 6.2 GHz and a reflection loss of-50.58 dB with the low matching thicknesses.Furthermore,the obtained 2D/3D RGO/CFs vdWs heterostructures also displayed the significant radar stealth properties,good corrosion resistance performances as well as outstanding thermal insulation capabilities,displaying the great potential in complex and variable environments.Accordingly,this work not only demonstrated a straightforward method for fabricating 2D/3D vdWs heterostructures,but also outlined a powerful mixeddimensional assembly strategy for engineering multifunctional foams for electromagnetic protection,aerospace and other complex conditions.

关 键 词：Multifunctionality Reduced graphene oxide/carbon foams 2D/3D van der Waals heterostructures Electromagnetic wave absorption Thermal insulation 

分 类 号：TB34[一般工业技术—材料科学与工程]