Journal
CARBON
Volume 111, Issue -, Pages 248-257Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.10.003
Keywords
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Funding
- Creative Research Initiative Program - National Research Foundation of Korea [2015R1A3A2028975]
- R&D Program of the Korea Railroad Research Institute, Republic of Korea
- National Research Council of Science & Technology (NST), Republic of Korea [PK1702A] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2015R1A3A2028975] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Here, we report a rapid and straightforward microwave method to synthesize a multilayered and interconnected three-dimensional graphene-carbon nanotube-iron oxide (3D G-CNT-Fe2O3) heteronanostructure for a flexible and wideband high-performance electromagnetic interference (EMI) shielding film. The single integrated 3D G-CNT-Fe2O3 heteronanostructure that consists of carbon nanotubes, graphene sheets and iron oxide nanoparticles results in strong synergy from multilevel EMI shielding due to strong coupling among conduction loss, hysteresis loss and multiple scattering. As a result, multilevel reflection, absorption, and scattering processes are realized on the surfaces and interlayers of the 3D heteronanostructure, and much higher SE (Shielding effectiveness) values (130 -134 dB) are observed in a bandwidth ranging from 8.0 to 12.0 GHz. As a whole, the thin and flexible composite film made with 3D G-CNT-Fe2O3 nanostructures and Poly(3,4-ethylenedioxythiophene) poly(4-styrenesulfonate) demonstrates excellent EMI shielding effectiveness over 130 dB and shows flexible and durable performance under repeated bending tests, over 1000 times, without a remarkable degradation of the performance. (C) 2016 Elsevier Ltd. All rights reserved.
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