The Study of Operating Parameters of a Graphene Electrode-Based Supercapacitor by the Voltmeter-Ammeter Method

Abstract

In current practice of developing supercapacitors, graphene appears to be a promising electrode material due to its unique physico-mechanical properties. Using graphene-based electrodes in supercapacitors opens up new prospects, primarily, the range expansion of operating and design parameters to enable the realization of higher operating voltage levels and to ensure thermal stability and an increase in the number of charge/discharge cycles.In the present research, electrotechnical parameters and characteristics of a supercapacitor with electrodes made of a composite material consisting of graphene and nanoporous carbon were studied during charge/discharge processes using the voltmeter-ammeter method. The results obtained demonstrate that applying graphene as an electrode material for supercapacitors allows for charge/discharge mode implementation, provided that the time to charge the supercapacitor up to the capacitance value of 5.10 F is 5 s and the supercapacitor operating weight is 5.04 g.