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Tytuł:
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Carbon Composite Networks with Ultrathin Skin Layers of Graphene Film for Exceptional Electromagnetic Interference Shielding.
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Autorzy:
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Ma X; Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.; School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China.
Li Y; College of Chemistry and Pharmaceutical Engineering , Huanghuai University , Zhumadian , Henan 463000 , China.
Shen B; Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.
Zhang L; Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.
Chen Z; Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.; School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China.
Liu Y; School of Materials Science and Engineering , Shanghai University , Shanghai 200444 , China.
Zhai W; Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.; School of Materials Science and Engineering , Sun Yat-sen University , Guangzhou , Guangdong 510275 , China.
Zheng W; Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering , Chinese Academy of Sciences , Ningbo , Zhejiang 315201 , China.
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Źródło:
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ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2018 Nov 07; Vol. 10 (44), pp. 38255-38263. Date of Electronic Publication: 2018 Oct 23.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Washington, D.C. : American Chemical Society
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Contributed Indexing:
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Keywords: EMI shielding; biomass; carbon composite networks; sandwich configuration; ultrathin graphene skin
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Entry Date(s):
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Date Created: 20181027 Latest Revision: 20191120
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Update Code:
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20240105
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DOI:
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10.1021/acsami.8b15545
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PMID:
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30360062
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Natural cotton was selected as a cheap and renewable carbon source to fabricate novel carbon networks with porous three-dimensional conductive frameworks composed of numerous unique hollow carbon fibers by pyrolysis, and outstanding electromagnetic interference (EMI) shielding effectiveness (SE) of ∼26.9-46.9 dB was observed for the samples (∼0.3 mm in thickness) with density of ∼0.14-0.06 g/cm 3 . Moreover, the combination of cotton-derived carbon networks with graphene through the construction of a sandwich configuration, where graphene sheets were dispersed inhomogeneously on both sides of carbon networks, was further developed and the resultant carbon composite networks with ultrathin skin layers of graphene film in thickness of only ∼2 μm possessed higher EMI SE of ∼48.5-87.0 dB than that (∼33.7-55.6 dB) of pure carbon networks in thickness of ∼0.3-0.7 mm, possibly due to the enhanced EM reflection and absorption of EM waves penetrating the material. The SE increment of ∼26-41% was also observed in the sandwiched samples in comparison with the counterparts with homogeneous graphene dispersion, demonstrating a very promising configuration for the significant SE enhancement.
