| 摘要 |
The present invention relates to a method of manufacturing a metal oxide/graphene nanocomposite and a method of manufacturing an electrode by using the metal oxide/graphene nanocomposite. The invention includes the steps of: preparing a synthetic material of a nanocomposite; pretreating the synthetic material to form a graphene flake; and hydrothermal synthesizing the pretreated synthetic material. According to the present invention, the invention has an advantage of being able to manufacture a metal oxide/graphene nanocomposite from a cheap graphite by a one-step process using only a surfactant, breaking away from a conventional graphene method using an oxidizing agent, a reducing agent, and high temperature heat, and the one-step process can reduce the number of process steps and also improve economic feasibility in terms of a process cost. In addition, when manufacturing an electrode, by breaking away from a conventional method of using an active material, a conductive material, and a binder, the present invention can create efficiency through a process of taking advantage of low electrical resistance due to graphene without adding a conductive material. Further, since a high purity graphene can be prepared in a short period of time, single-, two-, multi-component metal oxides that are various active materials applicable to an energy storage device can also be prepared in a one-step process, and desired oxides {a cobalt oxide (CoO), a tricobalt tetraoxide (Co3O4), a cobalt hydroxide [Co(OH)2], etc.} can be easily manufactured at desired percentages by weight, a very wide range of applications (a secondary battery and a gas sensor, etc.) can be expected. |
