Carbon complex and method for manufacturing the same

Abstract

Provided is a carbon composite and a method of manufacturing the same. More specifically, the present disclosure relates to a carbon composite in which a metal layer is formed on the surface of a carbon material, wherein the metal layer can selectively include at least one selected from the group consisting of a metal, a metal oxide, and a metal carbide. The surface of the carbon material is modified with an ionic amphipathic molecule, and a metal ion or an ionic metal complex is adsorbed onto the surface of the carbon material by utilizing the electrostatic attraction between the ionic amphipathic molecule and the metal ion or ionic metal complex. Through heat treatment, oxidation/reduction, thermal oxidation, carbothermal reduction, and carbonization reactions of the metal ion or ionic metal complex are carried out, thereby forming a metal layer. The carbon composite can allow control of the thickness of the metal layer by adjusting a coating method, and can selectively form a metal, a metal oxide, or a metal carbide on the surface of the carbon material by controlling heat treatment conditions.

What is claimed is: 
     
         1 . A method of manufacturing a carbon composite, the method comprising:
 preparing a carbon dispersion solution by dispersing a carbon material and an ionic amphipathic molecule in a polar solvent;   mixing a metal precursor in the carbon dispersion solution to prepare a carbon-metal dispersion solution;   obtaining a carbon-metal ion complex from the carbon-metal dispersion solution; and   forming a metal layer on a surface of the carbon material by heat-treating the carbon-metal ion complex,   wherein the metal layer comprises at least one selected from the group consisting of a metal, a metal oxide, and a metal carbide, and   the carbon-metal ion complex is bound by electrostatic attraction between the ionic amphipathic molecule coated on the surface of the carbon material and a metal ion or ionic metal complex comprised in the metal precursor.   
     
     
         2 . The method according to  claim 1 , wherein, due to the heat treatment in the forming of the metal layer, at least one reaction selected from thermal oxidation, carbothermal reduction, and carbonization of the metal ion or the ionic metal complex is carried out. 
     
     
         3 . The method according to  claim 1 , wherein, in the forming of the metal layer, a temperature or method of the heat treatment is controlled such that the metal layer selectively comprises at least one selected from the group consisting of a metal, a metal oxide, and a metal carbide. 
     
     
         4 . The method according to  claim 3 , wherein the heat treatment temperature ranges from 300° C. to 2,000° C. 
     
     
         5 . The method according to  claim 3 , wherein the heat treatment method comprises at least one selected from furnace heat treatment, laser treatment, white light treatment, Joule heating, microwave heat treatment, and plasma heat treatment. 
     
     
         6 . The method according to  claim 5 , wherein an intensity of the laser treatment ranges from 0.5 W to 20 W. 
     
     
         7 . The method according to  claim 5 , wherein a scanning speed of the laser treatment ranges from 50 mm/s to 1,500 mm/s. 
     
     
         8 . The method according to  claim 1 , wherein, in the preparing of the carbon dispersion solution, a content of the ionic amphipathic molecule ranges from 2 to 80 parts by weight based on 100 parts by weight of the carbon material. 
     
     
         9 . The method according to  claim 1 , wherein the ionic amphipathic molecule is a polymer or monomer comprising a functional group selected from the group consisting of amine, ammonium, carboxylic acid, sulfonic acid, sulfate, hydroxyl, thiol, and ketone. 
     
     
         10 . The method according to  claim 1 , wherein the metal precursor comprises at least one selected from the group consisting of copper (Cu), nickel (Ni), iron (Fe), zinc (Zn), tin (Sn), silver (Ag), titanium (Ti), aluminum (Al), molybdenum (Mo), zirconium (Zr), indium (In), tungsten (W), vanadium (V), chromium (Cr), niobium (Nb), tantalum (Ta), and hafnium (Hf). 
     
     
         11 . The method according to  claim 1 , wherein the obtaining of the carbon-metal ion complex is performed by a centrifugation method or a wet coating method. 
     
     
         12 . The method according to  claim 1 , wherein the metal layer is adjusted to have a thickness of 10 nm to 1 μm. 
     
     
         13 . A carbon composite, manufactured by the method according to  claim 1 ,
 wherein the carbon composite comprises:   a carbon material; and   a metal layer formed on a surface of the carbon material,   wherein the metal layer comprises at least one selected from the group consisting of a metal, a metal oxide, and a metal carbide.   
     
     
         14 . The carbon composite according to  claim 13 , wherein the metal layer has a thickness of 10 nm to 1 μm.