MOF-derived multi-interface carbon-based composites with enhanced polarization loss and efficient microwave absorption
Source abstract
Abstract
Metal-organic framework materials (MOFs) have been widely studied because of their adjustable composition and controllable structure in the field of microwave absorption (MA). Therein, Prussian blue analogs (PBA) have attracted the attention of researchers with ultra-high metal content. However, the attenuation ability of microwave for PBA-based composites is still unsatisfactory up to now. Therefore, the NiFe/CoFe@C composites were prepared by carbonizing polymetallic PBA (NiCoFe PBA) materials in this work, and the influence of different metal alloy components on MA was explored by adjusting the ratio of metal ions (Ni2+/Co2+). Moreover, the NiFe/CoFe@C composites have rich interfaces and enhance the polarization loss due to the introduction of Ni and it has an optimal performance at 2.7 mm that is the reflection loss (RL) is −41.49 dB and an effective absorption bandwidth (EAB) is 7.12 GHz with 1/1 (Ni2+/Co2+). The above data provides a research idea for obtaining light and efficient absorbers.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Materials Science and Technology, Centre for Hydrogenergy, Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, Nanjing University of Aeronautics and Astronautics, Nanjing, P. R. China
AVIC, Jiangxi Hongdu Aviation Industry Group Corporation Limited, Jiangxi, P. R. China
School of Materials Science and Engineering, Nanjing Institute of Technology, Nanjing, P. R. China
Science and Technology on Electromagnetic Scattering Laboratory, Beijing, P. R. China
Funding
National Defense Technology Innovation Special Zone Spark Project
References (55)
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