Li-ion supercapacitor equipped with graphene / CNT composite electrode and manufacturing method thereof

摘要

In order to provide a Li-ion supercapacitor having a high energy density and a high power density, capable of many charging and discharging, and having a long product life, an anode, a cathode spaced apart from the anode, and the anode In the configuration of the capacitor having a Li ion electrolyte filled between the cathodes, either one or both of the cathode and the anode is made of graphene / CNT composite, and the CNT concentration in the graphene / CNT composite is A Li ion supercapacitor equipped with a graphene / CNT composite electrode, characterized by being 17 wt% or more and 33 wt% or less.