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Current Microwave Chemistry


ISSN (Print): 2213-3356
ISSN (Online): 2213-3364

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

Author(s): Azhar A. Pirzado, Guillaume Dalmas, Lam Nguyen-Dinh, Ivan Komissarov, Francois Le Normand and Izabela Janowska

Volume 3, Issue 2, 2016

Page: [139 - 144] Pages: 6

DOI: 10.2174/2213335602666150729222314

open access plus


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.

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

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