Nanoscale physics

CFD-simulation and analyses of cavitation and dispersion processes for globulated multilayer graphene obtaining

Strativnov E.V.1, Khovavko A.I.1, Nie Guochao2, Pu-Guang Ji3 
1 Nano-technologies department of Gas Institution of the NAS of Ukraine. 
Gegtarevska, 39, Kyiv-03131, Ukraine. 
E-mail: estrativnov@gmail.com
2 School of Physics and Telecommunication Engineering (China).
3 School of Materials Science & Engineering and Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology (China).

Globulated multilayer graphene has recently been introduced as an electron-conductive additive in lithium-ion batteries. When optimally mixed with the base, it forms a three-dimensional electron-conducting network of cathode material. This increases the conductivity of the material and the charging speed of the battery [1]. Given the advantage of electronically conductive graphene additive over other types of carbon, it can be expected to be widely used in commercially available high-performance lithium-ion batteries.
Multilayer globular graphene [2] can produce from thermally expanded graphite [3]. Cavitation (centrifugal mechanical cavitator) is one of the stages of its mechanical processing.
In this paper, the CFD-simulation of a real cavitation machine will be considered. The analysis of the obtained data was carry out with the aim of its technological and energy optimization.

1.	Stoller M, Park S, Zhu Y, J.An, R.S.Ruoff. (2008) Nano Lett., 8, 3498 Graphene-Based Ultracapacitors. 3498–3502 https://doi.org/10.1021/nl802558y
2.	Rao C, Sood A, Voggu R, Subrahmanyam K. (2010) Some Novel Attributes of Graphene Chem. Lett., 1, 572 https://doi.org/10.1021/jz9004174
3.	Strativnov E, Bondarenko B, Dmitriev V, Kozhan A, Hovavko A. (2021) Method of graphene producing. Patent 149271 Ukr., С01В32/182.