石墨烯
材料科学
异质结
氧化物
吸收(声学)
腐蚀
反射损耗
电介质
保温
微波食品加热
光电子学
纳米技术
复合材料
复合数
计算机科学
冶金
电信
图层(电子)
作者
Beibei Zhan,Yunpeng Qu,Xiaosi Qi,Junfei Ding,Jiao‐Jing Shao,Xiu Gong,Jingliang Yang,Yanli Chen,Qiong Peng,Wei Zhong,Hualiang Lv
标识
DOI:10.1007/s40820-024-01447-9
摘要
Abstract 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 mixed-dimensional assembly strategy for engineering multifunctional foams for electromagnetic protection, aerospace and other complex conditions.
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