Abstract
The composites of porous Co3O4/MWCNTs and porous Co3O4/Co/RGO have been prepared by the wet chemical method and carbonization process. Due to well impedance matching characteristics, dielectric loss properties and highly porous structure Co3O4/Co/RGO composite displays extremely strong electromagnetic wave absorption with a maximum reflection loss of –54.2 dB at 13.14 GHz and the absorption bandwidth with the reflection loss exceeding –10 dB is 5.46 GHz (10.24–15.7 GHz) with the thickness of only 2.0 mm. Furthermore, the addition amount of the composite into paraffin matrix is merely 10 wt %, less than that of most EMW absorber reported previously. Therefore, Co3O4/Co/RGO composite can be used as a promising lightweight EMW absorbing material.
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ACKNOWLEDGMENTS
This work is supported by the National Natural Science Foundation of China (grant no. 61376106), Anhui Province Science and Technology Major Project (grant no. 17030901009), Research Foundation for School Talents (grant no. 2016rcjj07), the Key University Science Research Project of Anhui Province (grant no. KJ2016A574) and Natural Science Foundation of Anhui High Education (grant no. KJ2014A208).
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Shibin Lu, Meng, Y., Yuan, J. et al. Enhanced Electromagnetic Wave Absorption by Porous Composites of Co-Containing Zeolitic-Imidazolate Framework. Russ. J. Phys. Chem. 93, 2256–2262 (2019). https://doi.org/10.1134/S0036024419110189
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DOI: https://doi.org/10.1134/S0036024419110189