期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 879, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2021.160465
关键词
Metal-organic frameworks; Layered structure; FeCo@C nanocomposites; Impedance matching; Electromagnetic wave absorption
资金
- National Key Research and Development Program of China [2019YFE0122900]
- National Natural Science Foundation of China [51971162, U1933112, 51671146]
- Program of Shanghai Technology Research Leader [18XD1423800]
- China Postdoctoral Science Foundation [2020M671208]
Layered FeCo@C nanocomposites show excellent electromagnetic wave absorption performance with wide effective absorption bandwidth and strong absorption characteristics, making them a potential high-efficiency electromagnetic wave absorption material.
Metal-organic frameworks (MOFs) derived carbon-based magnetic metal materials had attracted much attention in the field of electromagnetic wave absorbers. In this work, a layered FeCo@C nanocomposites was successfully synthesized by annealing FeCo-MOFs. The pyrolytic temperatures had influenced the graphitization degree of the carbon frameworks and the magnetic properties of the FeCo nanoparticles. Owing to the outstanding attenuation capacity, impedance matching and unique layered structure, FeCo@C nanocomposites displayed an excellent electromagnetic wave absorption performance with the strongest reflection loss (RL) value could reach to & minus;53.6 dB at 12.8 GHz and the effective bandwidth (RL< & minus;10 dB) could reach 6 GHz (10.4-16.4 GHz) at the thickness of 2.5 mm with the filler loading was only 15 wt%. Therefore, the layered FeCo@C nanocomposites could be a potential high-efficiency electromagnetic wave absorption material with lightweight, wide effective absorption bandwidth, and strong absorption characteristics. (c) 2021 Elsevier B.V. All rights reserved.
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