Wang Jianwei, Jia Zirui, Liu Xuehua, Dou Jinlei, Xu Binghui, Wang Bingbing, Wu Guanglei
State Key Laboratory of Bio-Fibers and Eco-Textiles, Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, People's Republic of China.
College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, 266071, Shandong, People's Republic of China.
Nanomicro Lett. 2021 Aug 16;13(1):175. doi: 10.1007/s40820-021-00704-5.
Layered double hydroxides (LDHs) have a special structure and atom composition, which are expected to be an excellent electromagnetic wave (EMW) absorber. However, it is still a problem that obtaining excellent EMW-absorbing materials from LDHs. Herein, we designed heterostructure NiCo-LDHs@ZnO nanorod and then subsequent heat treating to derive NiCo@C/ZnO composites. Finally, with the synergy of excellent dielectric loss and magnetic loss, an outstanding absorption performance could be achieved with the reflection loss of - 60.97 dB at the matching thickness of 2.3 mm, and the widest absorption bandwidth of 6.08 GHz was realized at 2.0 mm. Moreover, this research work provides a reference for the development and utilization of LDHs materials in the field of microwave absorption materials and can also provide ideas for the design of layered structural absorbers.
层状双氢氧化物（LDHs）具有特殊的结构和原子组成，有望成为优异的电磁波（EMW）吸收剂。然而，从LDHs中获得优异的EMW吸收材料仍然是一个问题。在此，我们设计了异质结构的NiCo-LDHs@ZnO纳米棒，然后进行后续热处理以得到NiCo@C/ZnO复合材料。最后，在优异的介电损耗和磁损耗协同作用下，在匹配厚度为2.3 mm时实现了-60.97 dB的反射损耗，在2.0 mm时实现了6.08 GHz的最宽吸收带宽，从而获得了出色的吸收性能。此外，本研究工作为LDHs材料在微波吸收材料领域的开发利用提供了参考，也可为层状结构吸收体的设计提供思路。
