Patent ID: 7018601
Filing Date: 2006-03-28
Classification: B01J,B82Y,C08K,D01F,Y10T

Abstract:
1. A method of producing a stacked cup carbon nanofiber product comprising: a step of vapor growing a stacked cup carbon nanofiber comprising a coaxial stacking morphology of truncated conical tubular graphene layers, wherein: a step of removing at least part of a deposited film formed during the vapor growth from the large and small ring ends; and a step of dividing the stacked cup carbon nanofiber between the hexagonal carbon layers, said hexagonal carbon layers being bonded to one another only by Van der Waals forces, so as to obtain a stacked cup carbon nanofiber product having a length of from one hexagonal carbon layer to several hundreds of stacked hexagonal carbon layers without crushing the shape of each hexagonal carbon layer; wherein the stacked cup carbon nanofiber has a round cross-section.