Journal
RSC ADVANCES
Volume 5, Issue 50, Pages 40384-40392Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra06212h
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Funding
- National Basic Research Program of China [2012CB933103]
- Ministry of Science and Technology, China
- National Nature Science Foundation of China [51102244, 51171185, 51371055]
- International S&T Cooperation Program of China [2012DFA51300]
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Double-shelled Co/C/polyaniline (Co/C/PA) nanocomposites were prepared by combining the arcdischarge process and in situ chemical oxidative polymerization reaction. The effects of PA shells on the magnetic properties of Co/C/PA nanocomposites were studied, and the electromagnetic properties of Co/C/PA-paraffin composites were investigated in the 2-18 GHz frequency range. The reflection loss (RL) exceeding -10 dB is obtained in 9.9-16.4 GHz for an absorber thickness of 2.5 mm, which covers almost half of the X-band (8-12 GHz) and most of the Ku-band (12-18 GHz). Moreover, some strong absorption peaks exceeding -40 dB can be observed in the low-frequency range (3.5-5.5 GHz). These excellent absorbing performances show that the Co/C/PA nanocomposites have great potential for application in a microwave-absorption field for their strong absorption and broad bandwidth.
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