Scalable activated carbon/graphene based supercapacitors with improved capacitance retention at high current densities
Scalable activated carbon/graphene based supercapacitors with improved capacitance retention at high current densities
Scalable, highly stable supercapacitor electrodes were developed from the mixture of a tea factory waste based activated carbon (AC) and a low-cost electrochemical exfoliated graphene (EEG). The hybrid electrodes showed notably enhanced stability at high current densities. The AC sample was prepared by chemical method and exposed to a further heat treatment to enhance electrochemical performance. Graphene used in the preparation of hybrid electrodes was obtained by direct electrochemical exfolia