材料科学
普鲁士蓝
微波食品加热
反射损耗
电介质
有限元法
吸收(声学)
多孔性
光电子学
介电损耗
衰减
光学
复合材料
复合数
计算机科学
电极
电信
物理化学
物理
化学
热力学
电化学
作者
Jimei Liu,Wen-Zhu Yu,Ziqi Zhao,Dong Liu,Shanshan Liu,Jie Wang,Mingliang Ma,Qinghua Yu,Naitao Yang
标识
DOI:10.1021/acsami.3c09799
摘要
The unique layered structure and high conductivity of MXene materials make them highly promising for microwave absorption. However, the finite loss mechanism and severe agglomeration present challenging obstacles for ideal microwave absorbers, which could be effectively improved by constructing a three-dimensional (3D) porous structure. This study reports a 3D honeycomb MXene using a straightforward template method. The 3D MXene framework offers ample cavities to anchor the Prussian blue microcubes and their derivatives including Fe microboxes and Fe clusters by a simple annealing process. Based on the superiority of the 3D honeycomb architecture and magnetic–dielectric synergistic effects, the Fe/MXene absorbers demonstrate outstanding microwave absorption capabilities with the optimum reflection loss value of −40.3 dB at 2.00 mm in the low-frequency range from 4.2 to 5.6 GHz. The absorber also manifests superior radar wave attenuation by finite element analysis and exhibits great potential to be a flexible and thermal insulation material in a wide range of temperatures. This work proposes a useful reference for the design of 3D MXene-based porous architectures, and the synergistic magnetic–dielectric strategy further expands the potential of MXene-based absorbers, enabling them to be used as flexible and highly efficient microwave absorbers.
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