METHOD OF PREPARING GRAPHENE-GRAPHENE FUSED MATERIAL AND METHOD OF PREPARING GRAPHENE-SUBSTRATE COMPOSITE USING THE SAME
The present invention relates to a method of preparing a graphene-substrate composite using a graphene-graphene fused material. The method of preparing a graphene-substrate composite includes (a) forming a nano graphene-metal fused material comprised of nano-graphene and nano metal, (b) thermally treating the plurality of nano graphene-metal fused materials at a temperature higher than a melting point of the nano metal to connect the plurality of nano graphene-metal fused materials to each other by a melting bonding of the nano metal to form a graphene-graphene fused material, (c) pulverizing the graphene-graphene fused material to form a graphene-graphene fused material powder, and (d) dispersing the graphene-graphene fused material powder in a substrate to form a graphene-substrate composite.
1 . A method of preparing a graphene-graphene fused material, the method comprising:
(a) forming a nano-graphene-metal fused material comprised of nano-graphene and nano-metal; and
(b) thermally treating the plurality of nano graphene-metal fused materials to connect the plurality of nano graphene-metal fused materials to each other by a melting bonding of the nano metal to form a graphene-graphene fused material.
2 . The method of claim 1 , wherein the nano graphene-metal fused material is formed by coating or attaching a nano metal particle on a surface of the nano graphene.
3 . The method of claim 1 , wherein the graphene-graphene fused material is configured in the form of a single chain in which the plurality of nano graphene-metal fused materials are sequentially connected, or in the form of a composite chain in which the plurality of nano graphene-metal fused materials are irregularly connected.
4 . The method of claim 1 , wherein the thermal treating of the nano graphene-metal fused materials is conducted at a temperature higher than a melting point of the nano metal.
5 . The method of claim 1 , wherein the nano metal is any one of nickel, copper and silver.
6 . A method of preparing a graphene-substrate composite, the method comprising:
(a) forming a nano-graphene-metal fused material comprised of nano-graphene and nano-metal;
(b) thermally treating the plurality of nano graphene-metal fused materials to connect the plurality of nano graphene-metal fused materials to each other by a melting bonding of the nano metal to form a graphene-graphene fused material;
(c) pulverizing the graphene-graphene fused material to form a graphene-graphene fused material powder; and
(d) dispersing the graphene-graphene fused material powder in a substrate to form a graphene-substrate composite.
7 . The method of claim 6 , wherein the nano graphene-metal fused material is formed by coating or attaching a nano metal particle on a surface of the nano graphene.
8 . The method of claim 6 , wherein the graphene-graphene fused material is configured in the form of a single chain in which the plurality of nano graphene-metal fused materials are sequentially connected, or in the form of a composite chain in which the plurality of nano graphene-metal fused materials are irregularly connected.
9 . The method of claim 6 , wherein the thermal treating of the nano graphene-metal fused materials is conducted at a temperature higher than a melting point of the nano metal.
10 . The method of claim 6 , wherein the substrate is any one of polymer, an organic material, a metal, and an inorganic material.
11 . A graphene-graphene fused material prepared by the method of claim 1 , wherein a plurality of graphenes are connected to each other by a melting bonding of a nano metal.
12 . A graphene-substrate composite prepared by the method of claim 1 , wherein a graphene-graphene fused material powder is dispersed in a substrate.