Aqueous Activated Graphene Dispersions for Deposition of High-Surface Area Supercapacitor Electrodes
Vasyl Skrypnychuk, Nicolas Boulanger, Andreas Nordenström, Alexandr V. Talyzin
Abstract
/acetonitrile electrolytes providing specific capacitance values of 180 and 137 F/g, respectively, at a specific current of 1 A/g. The high surface area of activated graphene in combination with the good conductivity of CNTs allows an energy density of 35.6 Wh/kg and a power density of 42.2 kW/kg to be achieved. The activated graphene dispersions were prepared in liter amounts and are compatible with most industrial deposition methods.
Topics & Concepts
GrapheneSupercapacitorMaterials scienceSpecific surface areaNanotechnologyElectrolyteElectrodeChemical engineeringActivated carbonCarbon nanotubeOxideCapacitanceDispersion (optics)Graphene foamGraphene oxide paperOrganic chemistryChemistryCatalysisPhysical chemistryOpticsMetallurgyEngineeringPhysicsAdsorptionSupercapacitor Materials and FabricationGraphene research and applicationsElectrochemical sensors and biosensors