Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 189, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2020.108012
Keywords
Graphene foam; Fe3O4; Electromagnetic interference; Flexible
Categories
Funding
- National Natural Science Foundation of China [61605237, 51972330, 61734008]
- Military Commission Logistics Department [BY117J013]
- Jiangsu Province Postdoctoral Research Funding Scheme [2018K158C]
- Youth Support Project of Key Laboratory of Nano Devices and Applications of Chinese Academy of Sciences [Y4JA21001]
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The combination of electronic and magnetic shielding materials has been attracted considerable attentions because of the high-performance electromagnetic interference (EMI) shielding effectiveness (SE) produced by the synergetic effects between them. Here, the innovative structural Fe3O4/graphene foam (GF) composite is assembled by magnetic Fe3O4 nanoparticles anchoring onto the highly electronic conductive 3D GF. The electrical conductivity of the flexible Fe3O4/GF/poly dimethylsiloxane (PDMS) composite reaches up to 2.5 S cm(-1). The EMI SE of Fe3O4/GF/PDMS composite (similar to 1.0 mm) increases from similar to 26.6 dB for GF/PDMS composite to similar to 32.4 dB in the frequency range of 8.2-12.4 GHz, which is attributed to the synergistic effect between Fe3O4 nanoparticles and GF. Furthermore, after repeatedly bending for 10000 cycles, the EMI SE of the Fe3O4/GF/ PDMS composite still reaches up to 29.4 dB.
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