Specialists of Graphene Institute have developed and created technological installation that comes fundament for basic products of the initial material – based on 2D materials, mainly graphene, although we plan to develop also new materials, including low-layer hexagonal boron nitride (hBN), multilayer aluminum nitride (AlN) and multilayer molybdenum disulfide (MoS2) and combinations thereof. Below are the main graphene-based products.
Our technology is based on a new method of scalable production of large quantities of high-quality multilayer graphene by integration combined shift and dispeeling in pure liquids (for example, pure deionized water) due to supercavitation and powerful level of ultrasonic action (patented technology + know-how).
The quantity of graphene layers is 3 to 7, the thickness of graphene flakes or plates is 1.5 to 3.5 nm, the lateral size (along the graphene sheets) is controllably varied from 5 to 100 μm. Graphene purity is 98.8% to 99.4%. The raw material is high quality Russian graphite with a purity of about 99.8%. The figure below shows the way to obtain multilayer graphene from graphite using our technology (red arrow).
Options for carbon and nanocarbon structures
Electron microscopy of the initial graphite and produced multilayer graphene
Graphene parameters are determined by Raman spectrum (see figure), where the Raman shift-peak at a frequency of 2750 cm-1 is clearly visible. In addition, quality of graphene is confirmed by absence of Raman peaks for defects on graphene.