GGG - Grenoble Green Graphenofluids

PRODUCTION OF LOW COST GRAPHENE NANOSHEETS

CONTEXT

In the context of Graphene being the material of the future due to its particular properties in strength, thermal and electric conductivity, transparency, etc…, research conducted at the LEGI Grenoble has resulted in an innovative liquid exfoliation process.

TECHNOLOGY

The graphene nanosheets are exfoliated from graphite particles by an innovative microfluidic process using hydrodynamic cavitation ‘on a chip’. The production process is working at low pressure and low energy consumption.
The produced graphenofluid is a suspension of graphene nanoplatelets.

ADVANTAGES

The centrifuged solutions contain single layer (SLG) and multilayer (MLG) graphene. High stability of the dispersions has been proven for over 6 months.

• Concentration 1.50 g/L
• Thickness < 5 nm
• Lateral size ≃ 150-200 nm

All results are confirmed by qualitative and quantitative measurements.

STATE OF PROGRESS

A first prototype of the microfluidic system has been set-up in the laboratory. A well-defined and reproducible procedure confirmed by independent tests ensures the repeated quality of the production.
A second production unit at lab-scale is currently put in place.
Samples for application testing are available on demand.

APPLICATIONS

• Cooling systems
• Lubrification
• Water treatment
• Polymer chemistry
• Paints and coatings

PERSPECTIVES

=> A license to exploit the technology and its process know-how is available for all domains.

=> Samples for testing are available on request.