Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1417254 | Carbon | 2010 | 9 Pages |
Abstract
Mono- and multilayer graphene sheets have been successfully produced from commercial graphite powder in a wet grinding process under mild milling conditions. The shear forces in the milling chamber lead to a continuous delamination of ultrathin graphene flakes which are dispersed in a liquid medium. To avoid agglomeration of the exfoliated flakes the anionic surfactant sodium dodecyl sulfate was used. By adjusting the process parameters in a way to overcome the weak interlayer forces between the sheets without breaking them leads to the fabrication of thin flakes with high aspect ratios. The presented scalable process allows a high-yield and low-cost production of free-standing graphene sheets for various applications.
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Authors
Catharina Knieke, Angela Berger, Michael Voigt, Robin N. Klupp Taylor, Jonas Röhrl, Wolfgang Peukert,