Rezumat
CZU 620.197:621.794
DOI https://doi.org/10.52577/eom.2025.61.6.01
The possibilities of plasma-electrolyte treatment technology and equipment for obtaining electrolyte suspensions with graphene particles by exfoliation of graphite electrodes were studied. The regularities of graphite exfoliation in the anode-cathode processes of plasma-electrolytic treatment were established. It was found that the electrical modes of the technological alternating current source allow, through plasma-chemical exfoliation of graphite, to produce the electrolyte suspensions with graphene particles with varying degrees of defectiveness: from multilayer graphene particles (cathode pulse mode) to graphene oxide particles with varying degrees of functionalization (anode and intermediate modes). It has been established that plasma-electrolytic exposure to highly textured pyrolytic graphite, unlike polygranular graphite, causes the electrode to swell more than tenfold. It is shown that plasma-electrolyte treatment of synthetic graphites is highly effective for obtaining electrolyte suspensions with graphene particles.
Keywords: graphene, graphene oxide, graphite, plasma-electrolyte treatment, suspension, optical microscopy, scanning electron microscopy, Raman spectroscopy.