Patent ID: 7014829
Filing Date: 2006-03-21
Classification: B82Y,D01F,Y10S,Y10T

Abstract:
1. A stacked cup carbon nanofiber comprising a coaxial stacking morphology of vapor grown truncated conical tubular graphene layers, wherein each of the truncated conical tubular graphene layers includes a hexagonal carbon layer in the shape of a hollow cup not having a bottom, and having a large ring end at one end and a small ring end at the other end in the axial direction; wherein at least a part of the hexagonal carbon layers is exposed at the large ring end; wherein the exposed large ring end has an armchair edge, a zigzag edge, and a chiral edge on the circumference; wherein at least part of edges of the hexagonal carbon layers is exposed at the small ring end; wherein the exposed small ring end has an armchair edge, a zigzag edge, and a chiral edge on the circumference; wherein at least part of a deposited film formed during the vapor growth is removed from the large ring end and the small ring end; and wherein the stacked cup carbon nanofiber has a round cross-section.