Since the isolation of graphene by the "Scotch tape" method, many researchers have tried to synthesize solution-dispersible graphene. The challenge has been to develop a high-yield method that can exfoliate graphite efficiently into solution-dispersible graphene sheets without collateral damage to the graphene due to oxidation, or due to the use of a strong acid. A nonoxidative electrochemical process to obtain few-layer, highly conductive graphene flakes with a yield higher than 70% has been developed by a team from the Dept. of Chemistry, National University of Singapore (www.nus.edu.sg). The team says the yield they obtained is significantly higher than that produced by most current liquid-phase exfoliation methods. This is important for the scalable synthesis and industrial application of graphene.
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