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Multiscale hierarchical architecture of SiC whiskers-graphite nanosheets/polypyrrole ternary composite for enhanced electromagnetic wave absorption

Abstract

A core-shell SiC whiskers-graphite nanosheets/polypyrrole (SiCw-GNs/PPy) heterostructure with excellent electromagnetic (EM) absorption performance was successfully prepared by a simple combined method using glucose as carbon precursor. The content of GNs could be tailored by the mass ratio of glucose, while a substantial decrease of electromagnetic (EM) absorption performance of SiCw-GNs is achieved as the GNs content increases, which could be attributed to the inferior impedance matching degree and small attenuation constant. Impressively, being coated with conductive polymer PPy by a simple chemical polymerization method, the SiCw-GNs/PPy heterostructures exhibited superior EM absorption abilities with a minimum reflection loss (RLmin) value of −64.2 dB and the maximum effective bandwidth of 7.9 GHz, and the matched characteristic impedance and improved loss ability in SiCw-GNs/PPy heterostructures account for the significant enhancement. The core-shell SiCw-GNs/PPy heterostructures in present study could be considered as a promising candidate for the oncoming generation of microwave absorbing materials.

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Publication details

The article was received on 25 Jul 2018, accepted on 04 Sep 2018 and first published on 08 Sep 2018


Article type: Paper
DOI: 10.1039/C8TC03683G
Citation: J. Mater. Chem. C, 2018, Accepted Manuscript
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    Multiscale hierarchical architecture of SiC whiskers-graphite nanosheets/polypyrrole ternary composite for enhanced electromagnetic wave absorption

    S. Dong, X. Zhang, W. Zhang, J. Han and P. Hu, J. Mater. Chem. C, 2018, Accepted Manuscript , DOI: 10.1039/C8TC03683G

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