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Issue 25, 2014
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Facile fabrication of ultrathin graphene papers for effective electromagnetic shielding

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Abstract

Ultrathin electromagnetic interference (EMI) shielding materials promise great application potential in portable electronic devices and communication instruments. Lightweight graphene-based materials have been pursued for their exclusive microstructures and unique shielding mechanism. However, the large thickness of the current low-density graphene-based composites still limits their application potential in ultrathin devices. In this work, a novel approach has been taken to use conductive graphene paper (GP) in the fabrication of ultrathin EMI shielding materials. The as-prepared flexible GPs exhibit highly effective shielding capabilities, reaching ∼19.0 dB at ∼0.1 mm in thickness and ∼46.3 dB at ∼0.3 mm in thickness, thus the thinnest GPs having the best shielding performance among graphene-based shielding materials. Double-layered shielding attenuators have been designed and fabricated for a high shielding performance of up to ∼47.7 dB at a GP thickness of ∼0.1 mm. Mechanistically, the high performance should be due to Fabry–Pérot resonance, which is unusual in carbon-based shielding materials. The preparation of conductive GPs of superior shielding performance is relatively simple, amenable to large-scale production of ultrathin materials for EMI shielding and electromagnetic attenuators, with broad applications in lightweight portable electronic devices.

Graphical abstract: Facile fabrication of ultrathin graphene papers for effective electromagnetic shielding

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Publication details

The article was received on 15 Mar 2014, accepted on 28 Apr 2014 and first published on 29 Apr 2014


Article type: Paper
DOI: 10.1039/C4TC00517A
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Citation: J. Mater. Chem. C, 2014,2, 5057-5064

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    Facile fabrication of ultrathin graphene papers for effective electromagnetic shielding

    W. Song, L. Fan, M. Cao, M. Lu, C. Wang, J. Wang, T. Chen, Y. Li, Z. Hou, J. Liu and Y. Sun, J. Mater. Chem. C, 2014, 2, 5057
    DOI: 10.1039/C4TC00517A

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