金属有机框架衍生高效宽频电磁波吸收剂拓扑结构调控研究(英文)
发布时间:2021-07-19 11:46
装备隐身和电子器件电磁防护的发展对高带宽、强吸收先进电磁波吸收材料具有迫切需求,采用金属有机骨架(MOF)衍生有序结构金属/碳杂化材料是重要制备方法.本文采用具有可控拓扑结构和微相组成的普鲁士蓝衍生物作为前驱体,通过热解工艺制备空心、实心的笼状、盒状等拓扑结构Fe/Co/C和Fe/Mn/C纳米复合电磁波吸收剂.实心Fe/Co/C和空心Fe/Mn/C均表现出强电磁吸收和高吸收带宽,电磁波反射系数最低为-54.6 d B,其中900°C热解制备的实心盒状Fe/Co/C吸收剂在厚度2.5 mm时有效吸收带宽高达8.8 GHz,刷新了该类材料的性能上限.通过控制MOF拓扑结构来设计和调控金属/碳杂化吸波剂对于新型电磁波吸收材料的发展及其在装备隐身领域的应用具有重要意义.
【文章来源】:Science China Materials. 2020,63(10)EISCICSCD
【文章页数】:12 页
【文章目录】:
INTRODUCTION
EXPERIMENTAL SECTION
Synthesis of hollow Fe-Co PBA cages
Synthesis of hollow Fe-Mn PBA cages
Synthesis of solid Fe-Co PBA box
Synthesis of solid Fe-Mn PBA box
Preparation of Fe/Co/C and Fe/Mn/C nanocomplexes
Characterizations
EM wave absorption measurement
RESULTS AND DISCUSSION
PBAs and derived Fe/Co/C and Fe/Mn/C nanocomplexes with controllable topology
Magnetic and dielectric properties of hollow and solid Fe/Co/C and Fe/Mn/C nanocomplexes
EM wave absorption performance of hollow and solid Fe/Co/C and Fe/Mn/C nanocomplexes
CONCLUSIONS
本文编号:3290641
【文章来源】:Science China Materials. 2020,63(10)EISCICSCD
【文章页数】:12 页
【文章目录】:
INTRODUCTION
EXPERIMENTAL SECTION
Synthesis of hollow Fe-Co PBA cages
Synthesis of hollow Fe-Mn PBA cages
Synthesis of solid Fe-Co PBA box
Synthesis of solid Fe-Mn PBA box
Preparation of Fe/Co/C and Fe/Mn/C nanocomplexes
Characterizations
EM wave absorption measurement
RESULTS AND DISCUSSION
PBAs and derived Fe/Co/C and Fe/Mn/C nanocomplexes with controllable topology
Magnetic and dielectric properties of hollow and solid Fe/Co/C and Fe/Mn/C nanocomplexes
EM wave absorption performance of hollow and solid Fe/Co/C and Fe/Mn/C nanocomplexes
CONCLUSIONS
本文编号:3290641
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