COMPOSITE OF GRAPHENE AND METAL OXIDE FOR NEGATIVE ACTIVE MATERIAL OF RECHARGEABLE LITHIUM BATTERY AND PREPARING METHOD THEREOF

摘要

PURPOSE: A manufacturing method of a graphene-metal oxide is provided to obtain a graphene-metal oxide composite with excellent lifetime and high capacity by a simple manufacturing process. CONSTITUTION: A manufacturing method of a graphene-metal oxide composite comprises: a step of dispersing a graphene oxide into a solvent to manufacture a graphene oxide solution, and dispersing a metal oxide into a solvent to manufacture a metal oxide solution; a step of mixing the graphene oxide solution and the metal oxide solution to manufacture a graphene oxide-metal oxide composite; and a step of heat-treating the graphene oxide-metal oxide composite to remove oxygen and oxygen-containing functional groups from the graphene oxide and to reduce the graphene oxide into graphene to manufacture the graphene-metal oxide composite. [Reference numerals] (AA) Example 1; (BB) Comparative example 1;