材料科学
微波食品加热
反射损耗
电介质
合金
光电子学
极化(电化学)
吸收(声学)
导电体
介电损耗
复合材料
纳米技术
复合数
电信
计算机科学
化学
物理化学
作者
Mengxiao Sun,Derong Wang,Ziming Xiong,Zhongwei Zhang,Long Qin,Chaochan Chen,Fan Wu,Panbo Liu
标识
DOI:10.1016/j.jmst.2022.05.016
摘要
Dielectric-magnetic integrated absorbers have attracted arousing attention in microwave absorption, however, it still remains a great challenge to simultaneously achieve superior dielectric polarization and strong magnetic loss. Herein, we propose a multi-scale structure optimization strategy to anchor CoNi-MOFs derived 0D CoNi alloy onto 1D core-shell [email protected] surface. By decorating with the poly-dopamine layer, the connection between 1D NiO and CoNi-MOFs precursors was greatly improved via the electrostatic interaction. Benefiting from the overlapping conductive networks, enhanced interfacial polarization among the multi-dimensional heterogeneous interfaces and strong magnetic interaction, the fabricated multi-dimensional [email protected] composites exhibit outstanding microwave absorption. Typically, the optimal reflection loss is as high as –51.4 dB at 1.9 mm, and the effective absorption bandwidth achieves 4.6 GHz with a thickness of only 1.3 mm. This multi-scale structure optimization strategy inspires us with an efficient method to fabricate ideal microwave absorbers and the obtained multi-dimensional composites can be used as promising candidates in electromagnetic radiation protection.
科研通智能强力驱动
Strongly Powered by AbleSci AI