GRAPHENE AND GRAPHENE PRODUCTION Russian patent published in 2021 - IPC C25B1/00 H01M4/587 

FIELD: supercapacitors.

SUBSTANCE: invention relates to the composition of graphite for supercapacitors (options). According to one of the options, the composition contains: dehydrated graphite containing a set of flakes having at least one flake out of 10 with a size of more than 10 square micrometers, an average thickness of 10 atomic layers or less and a characteristic defect density of at least 50% µ-Raman spectra of dehydrated graphite obtained when excited at a wavelength of 532 nm with a resolution better than 1.8 inverse centimeters, having an area ratio D/G below 0.5, and this composition is a composite, and at least 30% of the sp³-hybridized carbon sections of the composition are one or more of: a) functionalized by a non-hydrogen chemical group, b) crosslinked with sp³-hybridized carbon sections of other flakes. The invention also relates to an electrode and a supercapacitor.

EFFECT: obtaining graphene.

34 cl, 6 dwg, 2 tbl