▎ 摘　　要

High performance electric source is critically requested at present for the improvement of the performance of mobile equipments. In this study, intercalation property of PF6- into graphitic carbon was studied and it was found that introduction of nano size pore into graphene sheet resulting in a large capacity for intercalation capacity of 147 mAh/g. The estimated energy density of the cell using carbon with nano porous structure was ca. 400 Wh/kg.