Conductive nanoparticle, conductive nanoparticle powder, and lithium battery comprising the powder

A conductive nanoparticle, a conductive nanoparticle powder, and a lithium battery including the conductive nanoparticle powder. The nanoparticle has a structure in which n (2 to 100) polycyclic nano-sheets are stacked upon one another perpendicular with respect to a first plane, wherein each of the polycyclic nano-sheets includes hexagonal rings of six carbon atoms linked to each other, the hexagonal rings being fused to one another and arranged on the first plane.