Graphene Production
Graphene Flakes
Graphene is a thin, two-dimensional layer of carbon atoms arranged in a hexagonal lattice. It is the basic building-block of graphite. It can therefore be obtined via exfoliation of graphite - mechanically or chemically. Chemical approach comprise oxidation state of graphene - graphene oxide, which can be then reduced to graphene.
Definition of Graphene
ISO standardization of graphene materials
Recently the first ISO standard on graphene quality has been issued. It constitutes that graphene can be called two-dimensional crystals of graphite with the thickness up to 10 atomic
layers. While other flakes containing more than10 graphene layers are basically graphite.
Quality Issues
Is any graphene 100% graphene?
Accordingly to the recent study (published by Adv. Mater. 2018, 1803784 (2018), most of the samples of market available graphene materials contained less than 10% of graphene and the rest was just graphite powder.
Consequences of wrong graphene used
Using graphene which does not corresponds to the standard will certainly lead to failed experiments, false research and costly production defects. Quality of the material directly affect its performance, and therefore it has to be assured in advance.
Our Solution
Our technology allows to purify the as-synthesized graphene/graphene oxide materials
Our technology allows to purify the as-synthesized graphene/graphene oxide materials
Our technology allows to purify the as-synthesized graphene/graphene oxide materials
Using Grafren Technology we are able to purify as-synthesized Graphene Oxide paste and separate it into GO dispersion with true graphene content (99%) and waste (thick flakes and graphite powder).
GRAFREN technology allows removal of 99% of impurities and non-graphene fractions
Our technology allows to purify the as-synthesized graphene/graphene oxide materials
Our technology allows to purify the as-synthesized graphene/graphene oxide materials
Independently on the quality of incoming graphene material, GRAFREN technology allows up to 99% removal of graphite powder and thick flakes of the graphene.