反射损耗
材料科学
纳米结构
羰基铁
微波食品加热
吸收(声学)
氢氧化物
热液循环
复合数
化学工程
吸收能力
极化(电化学)
纳米技术
复合材料
化学
物理化学
工程类
物理
量子力学
作者
Xingjian Dai,Quan Zhou,Lichao Dong,Chenzhi Zhang,Xinfang Zhang,Ping Tuo,Ruoting Lan,Pingan Yang,Yi Hou,Zhihao Bao,Yi Shuang,Jinsong Rao,Yuxin Zhang
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2023-02-24
卷期号:6 (5): 3472-3483
被引量:14
标识
DOI:10.1021/acsanm.2c05251
摘要
The specific nanostructure of the absorber is a key factor in improving the electromagnetic absorption performance. Herein, NiFe layered double hydroxide composited with carbonyl iron powder (LDH/CIP) was fabricated by a one-step hydrothermal synthesis process for the first time. By varying the morphology of the CIP template (spherical or flaky), the nanostructure of in situ grown LDH could be modulated, to optimize the electromagnetic wave absorption performance of LDH. The resultant NiFe/CIP synergistic composite has proved its excellent electromagnetic (EM) wave absorption performance with the minimum reflection loss (RLmin) of −96.5 dB and an effective absorption bandwidth (EAB) up to 7.6 GHz at the thickness of 8 mm. At a smaller thickness of 3 mm, the EAB value remains 7.2 GHz with the RLmin of −16.4 dB. Such an outstanding absorption capacity is primarily attributed to the magnetic loss of NiFe LDH, which is more significantly enhanced using CIP as the substrate. Moreover, the formation of nano-flower-like LDHs, which possess rich heterogeneous structural interfaces and specific surface area to induce the polarization relaxation of the absorber. Therefore, the established NiFe/CIP composite brings insights into the design of high-performance EM wave absorbers.
科研通智能强力驱动
Strongly Powered by AbleSci AI