Patent ID: 7048904
Filing Date: 2006-05-23
Classification: B01J,B82Y,D01F,Y10T

Abstract:
1. A stacked cup carbon nanofiber for a fuel cell having catalytic metal supported thereon comprising a vapor grown coaxial stacking morphology of truncated conical tubular graphene layers, wherein each of the truncated conical tubular graphene layers includes a hexagonal carbon layer and has a large ring end at one end and a small ring end at the other end in an axial direction, wherein at least part of edges of the hexagonal carbon layers is exposed at the large ring ends by removing a deposited film of an excess amount of pyrolytic carbon formed during the vapor growth, wherein the catalytic metal is a fuel cell catalyst and is supported on the exposed edges of the hexagonal carbon layers, such that the catalyst is supported on more than one of the exposed edges, and wherein the stacked cup carbon nanofiber has a round cross-section.