▎ 摘　　要

NOVELTY - Manufacturing high heat-resistance graphene-silicon-carbon nanotube composite comprises (i) preparing a mixed solution containing graphene oxide, silicon-based particles, single-walled carbon nanotubes and a solvent; (ii) spray-drying the mixed solution to prepare composite particles in which the graphene oxide is coated to surround silicon-based particles while the solvent is evaporated, where single-walled carbon nanotubes are bonded to the graphene oxide; and (iii) reducing the graphene oxide and the single-walled carbon nanotubes by heat-treating the composite particles. The graphene oxide includes oxygen-containing functional group that is an epoxy group or a hydroxy group on surface, but oxygen-containing functional group that is a lactol group or a carboxy group does not exist on surface, so that graphene oxide exhibits thermal stability, and heat treatment is performed in air atmosphere in a temperature range showing thermal stability of the high heat resistant graphene oxide. USE - The high heat-resistance graphene-silicon-carbon nanotube is useful in secondary battery (claimed). ADVANTAGE - The method lowers the process cost and improves the convenience and efficiency of the process; minimizes defects and can improve the electrical conductivity of a silicon-based anode material for secondary batteries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for secondary battery, comprising negative electrode comprising high heat resistance graphene-silicon-carbon nanotube composite. A separator provided between anode and cathode, and electrolytes.