复合数
微波食品加热
反射损耗
三元运算
材料科学
复合材料
壳体(结构)
多孔性
热液循环
吸收(声学)
阻抗匹配
电阻抗
化学工程
量子力学
程序设计语言
工程类
电气工程
物理
计算机科学
作者
Zhenjun Wang,Haotian Jiang,Quanming Zhao
标识
DOI:10.1016/j.jallcom.2022.168611
摘要
The core-shell structure can improve the impedance matching characteristics and dispersibility of microwave absorbers, and has become one of the research hotspots of high-performance absorbers. Herein, a 3D ternary porous core-shell [email protected]2/RGO composite is synthesized by hydrothermal-precipitation, two-step hydrothermal and modified hummers method. Results show that the synthesized ternary composite with 3D porous core-shell structure exhibits remarkable enhancement of microwave absorption. When the matching thickness is 1.83 mm, the minimum reflection loss (RLmin) of the composite is − 64.05 dB at 6.24 GHz, and its effective absorption bandwidth is up to 7.34 GHz (from 10.66 to 18 GHz) at 2.5 mm. It is believed that its good absorbing performance originates from the specific 3D porous core-shell structure design and abundant interface structure. This work provides an efficient and promising strategy for the structural design and interface construction of novel magnetic/electrical composites with efficient microwave absorption.
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