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The Electrical Property of Large Few Layer Graphene Flakes Obtained by Microwaves Assisted Exfoliation of Expanded Graphite

[ Vol. 3 , Issue. 2 ]


Azhar A. Pirzado, Guillaume Dalmas, Lam Nguyen-Dinh, Ivan Komissarov, Francois Le Normand and Izabela Janowska   Pages 139 - 144 ( 6 )


Few layer graphene (FLG) was synthesized by -wave assisted exfoliation of expanded graphite in toluene with an overall yield from c.a. 7% to 20%. A significant difference in the absorption of -waves by the expanded graphite and toluene allowed a rapid heating of the medium. The number of FLG sheets varies from 3 to 12, while the lateral size of the sheets exceeds few ms. The obtained FLG exhibits very low resistance with average value of 1.6 k (500 minimum) which is comparable to that of high quality graphenes synthesized by CVD methods, and lower than numbers of exfoliated graphenes.


µ -waves, electrical properties, expanded graphite, few layer graphene, liquid exfoliation, resistance.


Institut de Chimie et Procédés pour l`Énergie, l`Environnement et la Santé (ICPEES), CNRS UMR 7515- University of Strasbourg, P.O. Box: 67-087, Strasbourg, France.

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