Chemically Modified Graphene Stars As New Electrode Material In Ultracapacitor Cell

摘要

Capacitors have numerous technological applications, including energy storage, and researchers are striving to develop more efficient devices (i.e., to increase capacitance per unit mass or per unit volume or both). Some ultracapacitors utilize nanoscopic charge separation at the electrochemical interface between an electrode and an electrolyte, an approach known as electrochemical double layer capacitance (EDLC). They offer superior performance compared to conventional dielectric capacitors because the energy density is inversely proportional to the thickness of the double layer, and this thickness in EDLC is of the order of a nanometer.