Issue 38, 2015

Temperature dependent microwave absorption of ultrathin graphene composites

Abstract

Ultrathin, lightweight graphene composites exhibit high-efficiency microwave absorption at elevated temperatures as well as thermal-stability permittivity. The minimum reflection loss reaches −42 dB and the widest bandwidth covers the entire X-band (−10 dB). More significantly, the composites possess one high-efficiency absorption belt with a value ≤−15 dB, as well as two ‘islands’ of reflection loss of ≤−17 dB and −30 dB. These excellent properties arise from the synergistic effect of polarization and conductivity. Our finding demonstrates that ultrathin graphene is a promising microwave absorber for microwave attenuation devices, information security and electromagnetic pollution defense.

Graphical abstract: Temperature dependent microwave absorption of ultrathin graphene composites

Supplementary files

Article information

Article type
Paper
Submitted
19 Jul 2015
Accepted
03 Sep 2015
First published
03 Sep 2015

J. Mater. Chem. C, 2015,3, 10017-10022

Author version available

Temperature dependent microwave absorption of ultrathin graphene composites

W. Cao, X. Wang, J. Yuan, W. Wang and M. Cao, J. Mater. Chem. C, 2015, 3, 10017 DOI: 10.1039/C5TC02185E

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