Patent ID: 8663591
Filing Date: 2014-03-04
Classification: B82Y,C01B,Y02E

Abstract:
1. A method of preparing a graphene shell, comprising: performing a first heat treatment on a mixture of an organic solvent and a graphitization metal catalyst so as to carburize the graphitization metal catalyst with carbon decomposed from the organic solvent, the graphitization metal catalyst being in the form of particles; and forming graphene shells on surfaces of the carburized graphitization metal catalyst by performing a second heat treatment process on the carburized graphitization metal catalyst in an inert or reductive gas atmosphere; and wherein the graphitization metal catalyst comprises at least one metal selected from the group consisting of Ni, Co, Fe, Pt, Au, Al, Cr, Cu, Mg, Mn, Mo, Rh, Ta, Ti, W, U, V, Zr, and an alloy thereof; and wherein the graphene shell has the same shape as the metal catalyst.