Patent ID: 9704611
Date: 2017-07-11
CPC Classifications: C01B,C09K,C23C,H01B,H01F

Claim:
1. A method of manufacturing a composite structure of graphene and carbon nanotube configured in a three-dimensional form, comprising sequential steps of: graphene platelets preparation, performed by preparing graphene platelets and each of the graphene platelets formed of N graphene layers, wherein N is a positive integer between 1 and 1,000; chemical precipitation, performed by dispersing the graphene platelets in a solution comprising a metal salt precursor, forming the metal salt from the solution through precipitation, and depositing the metal salt onto surfaces of the graphene platelets; chemical reduction, performed by placing the graphene platelets decorated with metal salt at a high temperature for a thermal reduction treatment such that the metal salt thermally decomposes and is reduced to form a plurality of metal particles; and carbon nanotubes growth step, performed by supplying a gaseous carbon source and a reducing gas for the graphene platelets, and forming the carbon nanotubes on the metal particles by a thermal treatment, wherein each graphene platelet has a planar direction along a planar surface of the graphene platelet, and an axial direction of the carbon nanotube is perpendicular to the planar direction.