| abstract |
FIELD: electrical engineering. n SUBSTANCE: invention relates to the field of electrical engineering, namely, to electrodes of supercapacitors, containing particles of an activated material, carrying a charge, graphene carbon particles and a binder. Particles of the activated material carrying the charge may contain activated carbon, while the graphene carbon particles are thermally produced at temperatures above 3500 °C. Electrodes may also contain electrically conductive carbon. In the manufacture of supercapacitor electrodes in a coating deposited on a foil substrate, enter these graphene carbon particles in an amount of from 1 to 10 wt. %, which provide an increase in the specific capacity of the electrode and an increase in its conductivity. Conductive carbon together with graphene carbon particles obtained by the thermal method at temperatures above 3500 °C, demonstrates higher capacitance with the stability of the electrode for cyclic operation. n EFFECT: conductive carbon together with graphene carbon particles demonstrates a higher capacity with the stability of the electrode for cyclic operation. n 13 cl, 7 dwg, 5 ex, 4 tbl |