KR20150124636A - Preparation method for edge-functionalized graphite via mechanic-chemical process using low grade graphite and the graphine nano-plate manufactured thereby - Google Patents

Abstract

The present invention relates to a method for manufacturing edge-functionalized graphite with a high doping ratio of a heteroatom while using low grade graphite with low purity, to a manufacturing method of graphene nanoplate, and to the graphene nanoplate manufactured therefrom. The method is capable of mass-producing with a simple and economic manufacturing process, increasing economic feasibility by using low grade graphite with a large average particle size and low contents of a carbon element regarding a raw material, and manufacturing edge-functionalized graphene nanoplate with a significantly high doping ratio of a heteroatom in comparison to the use of the conventional finely pulverized graphite.

Description

The present invention relates to a method for producing graphite having an edge function from low-grade graphite by a mechanochemical method and a graphene nano-plate manufactured therefrom by using an edge-functionalized graphite via mechanic-

The present invention relates to a method for producing graphite whose edge is functionalized by a mechanical method, a method for producing an edge functionalized graphene nanoplate, and a graphene nanoplate produced therefrom.

Graphene is one of the most remarkable new materials in the future as a material with excellent physical and electrical properties. Various methods of producing graphene having such excellent physical properties have been reported, including mechanical peeling, chemical peeling, peeling-re-insertion-expansion, chemical vapor deposition, epitaxy and chemical synthesis .

The mechanical peeling method has excellent properties inherent to graphene, but the final yield is extremely low and is used for researching the characteristics of graphene in a laboratory or the like.

Graphene produced by chemical vapor deposition has been reported to exhibit excellent properties, but heavy metal catalysts are required, require a complicated manufacturing process, and are exposed to economical weaknesses, thus limiting mass production.

The epitaxy synthesis method is disadvantageous in that the electrical characteristics of the produced graphene are poor and the substrate is very expensive.

Therefore, the most widely used method is to produce oxidized graphite by a chemical method, obtain graphene oxide after ultrasonic treatment, and then reduce it to obtain graphene. Since the oxidized graphite obtained by such a method is entirely functionalized, its physical and electrical characteristics are deteriorated. Further, it is difficult to predict to what extent the functionalized graphite is functionalized by this functional group. Therefore, There is a problem that prediction is difficult, and graphene, which is the final product, loses excellent properties, and graphene produced through oxidized graphite is subject to a lot of application in fields such as transparent electrodes and the like.

The present inventors have been registered in Korean Patent No. 10-124815 as a method for producing edge-functionalized graphite by a mechanochemical method comprising mechanically grinding graphite in the presence of one or more external atmosphere materials. This method is capable of producing a large amount of excellent graphene and introducing various kinds of functional groups to the edge of graphite. However, it was a method of using finely pulverized and high purity graphite as a raw material and doping heteroatoms at the edges of graphite Respectively.

The present invention is intended to provide a method for producing an edge-functionalized graphite having a high doping ratio of heteroatoms while using low-grade graphite having low purity.

The present invention also provides a method for producing graphene nanoparticles having low-purity low-grade graphite and high-doped ratios of heteroatoms.

The present invention also provides a graphene nanoplate having an edge function.

The present invention relates to a method for producing edge-functionalized graphite comprising mechanically pulverizing graphite having an average particle size of 0.2 to 50 mm in the presence of at least one outer atmosphere material.

The graphite preferably has an average particle size of 0.6 to 30 mm.

The graphite may be a low grade graphite having a carbon element content of 50 to 99%.

The graphite may have a BET surface area of 1.5 to 5 m ² / g.

The graphite may have a void volume of 3 to 30 mu l / g.

Wherein the outer atmosphere material is selected from the group consisting of air, methane, ethane, carbon monoxide, carbon dioxide, nitrogen dioxide, ammonia, florine, chlorine, hydrogen fluoride, hydrogen bromide, hydrogen chloride, hydrogen cyanide, hydrogen sulfide, hydrogen iodide, water, The organic solvent is selected from the group consisting of sulfuric acid, nitric acid, acetic acid, n-hexane, cyclohexane, heptane, toluene, benzene, acetone, N-methylpyrrolidone, tetrahydrofuran, dimethylacetamide, dimethylformamide, dimethylsulfoxide, , Sodium carbonate, sodium carbonate, sodium carbonate, potassium carbonate, sodium carbonate, sodium carbonate, sodium carbonate, sodium carbonate, sodium carbonate, sodium carbonate, sodium carbonate, potassium carbonate, , Sodium sulfate, sodium nitrate, sodium chloride, ammonium chloride, boron trioxide, boronic acid, aminobenzoic acid, chlorobenzoic acid, Thiobenzoic acid, maleic acid, sulfur, phosphorus, selenium, tellurium, antimony, and combinations thereof.

The edge functionalized graphite is a functional group bonded to the edge of graphite. The functional group may be an areylene group, a tert-butyl group, a cyclohexyl group, a hydroxyl group, a lactone group, a lactam group, an ester group, An amino group, an imide group, an azide group, a cyanogenic group, a nitryl group, a nitro group, a nitro group, a nitro group, a pyridine group, a phosphine group, a phosphoric acid group, a phosphonic acid group, a sulfone group, A carboxylic acid group, a carboxylic acid ester group, a haloformyl group, an ether group, an ester group, a peroxy group, a hydroperoxy group, an acyl halide group, a fluoro group, a chloro group, a bromo group, a bromo group, Mosquito, iodine, and combinations thereof.

The step of pulverizing the graphite is carried out at a speed of 100 to 10,000 rpm for 1 to 100 hours.

The step of pulverizing the graphite is carried out until the internal temperature of the pulverizer rises to 260 to 500 ° C.

The present invention also relates to a method for producing an edge functionalized graphene nanoplate comprising the above method.

The present invention also relates to a grafted nanoplate produced by the above process and having a BET surface area of 800 to 2,000 m ² / g.

The edge-functionalized graphene nanoplate has a pore volume of 0.5 to 2 ml / g.

The edge functionalized graphene nanoparticles have an average diameter of 20 to 500 nm.

INDUSTRIAL APPLICABILITY The method for producing edge-based functionalized graphite or edge-functionalized graphene nanoplate according to the present invention is characterized in that the manufacturing process is very simple, economical, and massable, and the low- Graphite can be used, which makes it possible to manufacture graphene nanoplates having high functionalities with high heteroatom doping ratios rather than those of conventional finely pulverized graphite.

FIG. 1A is an X-ray photoelectron spectroscopic analysis graph of the graphite of Production Example 1-1 manufactured using high purity graphite, FIG. 1B is an X-ray photoelectron spectroscopy analysis of graphite of Production Example 1-2 produced using low grade graphite And FIG. 1C is an X-ray photoelectron spectroscopic analysis graph of the graphite of Production Example 1-3 produced using Kish graphite.
FIG. 2A is a graph of TGA thermal analysis of high purity graphite and graphite of Production Example 1-1 produced therefrom, FIG. 2B is a graph of TGA thermal analysis of graphite of Production Example 1-2, Graphite and a TGA thermal analysis graph of the graphite of Production Example 1-3 produced therefrom.
FIG. 3A is a graph showing the curve of the high purity graphite and the graphite of Production Example 1-1 produced therefrom according to the cyclic voltammetry method, FIG. 3B is a graph showing the curve of the low graphite and the graphite of Production Example 1-2 produced therefrom FIG. 3C is a graph showing the curves of Kish Graphite and the graphite produced in Production Example 1-3 thereof by the cyclic voltammetry method. FIG.

The present invention relates to a method for producing edge-functionalized graphite comprising mechanically pulverizing graphite having an average particle size of 0.2 to 50 mm in the presence of at least one outer atmosphere material.

The average particle size of the graphite is 0.2 to 50 mm, preferably 0.6 to 30 mm, more preferably 1 to 10 mm. Below the lower limit, the doping ratio of the heteroatom of the graphitized graphite with the edge is remarkably low. Even if the upper limit value is exceeded, the edge does not affect the quality of the functionalized graphite, but is usually set only because the graphite, which is somewhat pulverized, is easy to handle.

The graphite used in the conventional mechanical separation method, chemical separation method, peel-re-insertion-expansion method, chemical vapor deposition method, epitaxial synthesis method or chemical synthesis method uses graphite having a high purity of 98 to 99% In order to increase the purity of natural graphite, pulverization and selection process were carried out, so that graphite with high purity was often pulverized. In Korean Patent No. 10-1245815, graphite used by the present inventors was finely pulverized graphite having a maximum particle size of not more than 100 m and a carbon element content of 99.64%.

In the present invention, it was found that the doping ratio of the heteroatom of the graphitized graphite with the edge is significantly increased as the graphite having an average particle size larger than that of the conventional graphite is mechanically pulverized in the presence of at least one outer atmosphere material , It has been confirmed for the first time that edge-functionalized graphite has little effect on the properties of the manufacturing process or the final product even if impurities are incorporated in the graphite in a considerable amount, for example, 1 to 50% or 10% or more.

In the following description, 'graphite' may be natural graphite as well as artificial graphite, and is used to include graphite, which is produced as a by-product in various industries, for example, Kish Graphite.

The graphite may be lower graphite having a carbon element content of 50 to 99%, lower than the content of the carbon element, lower than 90%, lower than 80%, lower than 70%, higher than the content of the carbon element, % ≪ / RTI >

The graphite may have a BET surface area of from 1.5 to 5 m ² / g, preferably from 2 to 4 m ² / g.

The graphite may have a void volume of 3 to 30 mu g / g, preferably 5 to 15 mu g / g.

The outer atmosphere material is a reactive material that reacts with mechanically pulverized graphite, and includes all compounds of solid, liquid, or gaseous constituents of 1 to 30 carbon compounds or non-carbon compounds, which are synthesized or commercially sold . For example, the carbon compound is an alkane having 1 to 30 carbon atoms. Alkenes, alkyl compounds and the like, and the non-carbon compounds include hydrogen, ammonia, water, sulfur trioxide, bromine, iodine and the like.

The outer atmosphere material may be, for example, air, methane, ethane, carbon monoxide, carbon dioxide, nitrogen dioxide, ammonia, florine, chlorine, hydrogen fluoride, hydrogen bromide, hydrogen chloride, hydrogen cyanide, hydrogen iodide, , Isopropyl alcohol, sulfuric acid, nitric acid, acetic acid, normal hexane, cyclohexane, heptane, toluene, benzene, acetone, N-methylpyrrolidone, tetrahydrofuran, dimethylacetamide, dimethylformamide, dimethylsulfoxide, Dichloromethane, chloroform, carbon tetrachloride, bromine, tribromoboron, iodine, sodium hydroxide, potassium hydroxide, sodium hydride, sodium hydrogencarbonate, sodium hydrogencarbonate, Sodium carbonate, potassium carbonate, sodium sulfate, sodium nitrate, sodium chloride, ammonium chloride, boron trioxide, boronic acid, aminobenzoic acid, chloro Division may be selected from the acid, bromobenzo acid, thiol-benzo acid, maleic acid, sulfur, phosphorus, selenium, tellurium, antimony, and the group consisting of a combination thereof.

The outer atmosphere material may be a solid, a liquid, or a gas having different properties or a material having the same properties. In this case, the functionalized graphite produced by the manufacturing method of the present invention may contain one or more functional groups .

In addition, when the external atmosphere material on the solid, liquid, or gaseous nature includes a risk of explosion, such an outside atmosphere material may be used in combination with an inert gas. Examples of the inert gas include, but are not limited to, nitrogen, argon, helium, or neon.

In the method of the present invention, the molar ratio of at least one of the atmospheric substances to the graphite is 1: 0.1 to 1:20, preferably 1: 1 to 1:10. When a larger proportion of graphite is used than the maximum molar ratio, sufficient functionalization does not occur on the surface of the prepared graphite edge, resulting in a problem that the yield of graphite production is significantly reduced.

The container for crushing the graphite may be made of any material, but it is preferable to use a container made of metal. However, depending on the material of the vessel, it may be necessary to further remove the crushing vessel components contained in the final product after crushing the graphite.

For example, in the case of pulverizing graphite in a metal pulverizing vessel, the step of pulverizing such graphite is further followed by a step of removing the metal by using an aqueous acid solution.

The acid is an acid having a pH of 3 or less, such as hydrochloric acid, sulfuric acid, nitric acid, carbonic acid, phosphoric acid, acetic acid, and perchloric acid, preferably hydrochloric acid, sulfuric acid or nitric acid. Further, the above-mentioned acid is preferably used in the range of the molar ratio of weak acid of 0.1 M to 5 M, preferably 0.5 M to 2 M, for the production of functionalized graphite.

The step of pulverizing the graphite is carried out at a speed of 100 to 10,000 rpm for 1 to 100 hours, preferably at a speed of 100 rpm to 2,000 rpm for 24 to 72 hours.

The step of pulverizing the graphite is carried out until the internal temperature of the pulverizer rises to 260 to 500 캜 and 300 to 450 캜.

The step of pulverizing the graphite has a pressure of 1 to 20 bar, preferably 2 to 15 bar.

The graphite may be pulverized so that the carbon at the edge portion is charged or radicals and reacts with the liquid or gaseous compound present in the surroundings or the solid, After reacting with a gaseous compound, it reacts with water or the like in the air to become graphitized with the edges functioning.

The edge functionalized graphite is a functional group bonded to the edge of graphite. The functional group may be an areylene group, a tert-butyl group, a cyclohexyl group, a hydroxyl group, a lactone group, a lactam group, an ester group, An amino group, an imide group, an azide group, a cyanogenic group, a nitryl group, a nitro group, a nitro group, a nitro group, a pyridine group, a phosphine group, a phosphoric acid group, a phosphonic acid group, a sulfone group, A carboxylic acid group, a carboxylic acid ester group, a haloformyl group, an ether group, an ester group, a peroxy group, a hydroperoxy group, an acyl halide group, a fluoro group, a chloro group, a bromo group, a bromo group, Mosquito group, iodine group, and combinations thereof.

The functional group may also be an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 30 carbon atoms, a cycloalkyl group having 3 to 30 carbon atoms , An aryl group having 6 to 30 carbon atoms, or an aralkyl group having 6 to 30 carbon atoms, and the alkyl group, alkenyl group, alkynyl group, cycloalkyl group, aryl group or aralkyl group is not substituted Alkyl having 1 to 30 carbon atoms, alkoxy having 1 to 30 carbon atoms, formyl, alkylcarbonyl having 1 to 30 carbon atoms, phenyl, alkoxy having 1 to 30 carbon atoms, halo, nitro, amino, cyano, mercapto, Benzoyl, phenoxy, and combinations thereof.

Also, a graphene nanoplate having an edge function is produced through the method of manufacturing the edge-functionalized graphite.

The present invention also relates to an edge-functionalized graphene nanoflake produced by the above process and having a BET surface area of 800 to 2,000 m ² / g, preferably 900 to 1,500 m ² / g.

The edge functionalized graphene nanoplate has a void volume of 0.5 to 2 ml / g, preferably 0.7 to 1.5 ml / g.

The edge-functionalized graphene nanoplate has an average diameter of 20 to 500 nm, preferably 50 to 300 nm.

The functional group bonded to the edge of the edge-functionalized graphite includes 0.01 to 50% by weight based on the total weight of the edge-functionalized graphite.

Hereinafter, the present invention will be described more specifically with reference to the following examples. However, the following examples are provided only to aid understanding of the present invention, and the scope of the present invention is not limited to the following examples.

Production Example 1: Production of graphite with edge-iodine-functionalized graphite

High purity graphite with a carbon element content of 99% or more and a particle size of 100 mesh or less, low grade graphite having a low carbon element content, and Kishy graphite as a byproduct of a steel making process were used as graphite for graphitization.

The elemental analysis results of the graphites are shown in Table 1, and the average particle size, BET surface area and pore volume are shown in Table 2.

division C O H impurities High purity graphite 99.64 0.13 -  0.23 Low grade graphite 70.87 0.32 0.03 28.78 Kish Graphite 68.89 1.75 0.04 29.32

In Table 1, the impurity content was calculated by subtracting the content ratio of carbon, oxygen and hydrogen atoms in the entire 100%.

division Average particle size BET surface area Pore volume High purity graphite 0.12 mm 1.15 m ² / g 6.7 μl / g Low grade graphite 4.2 mm 2.78 m ² / g 1.6 μl / g Kish Graphite 3.8 mm 1.83 m ² / g 9.8 [mu] l / g

5 g of the graphite and 10 g of iodine were put into a metal grinding vessel, respectively. The air in the metal crushing vessel was removed by using a vacuum pump and pulverized at 500 rpm for 48 hours. After the pulverization was completed, the pulverized material was treated with 1 M hydrochloric acid to remove the metal contained in the pulverized material. Thereafter, the resultant was lyophilized to produce an iodine-functionalized graphite. High-purity graphite was used in Production Example 1-1, low-grade graphite was used in Production Example 1-2, and Kish Graphite was used in Production Example 1-3, in which the edge was functionalized with iodine.

Experimental Example 1: X-ray photoelectron spectrometry

The X-ray photoelectron spectroscopy (X-ray photoelectron spectroscopy) is used to analyze the composition of the surface of the sample by measuring the energy of the photoelectrons emitted from the X-ray to the surface of the sample. Respectively.

1B and 1C, foreign matter peaks such as oxygen and silicon were relatively large in low grade graphite or Kish graphite compared to high purity graphite. However, in the functionalized graphite produced through mechanical grinding in Production Example 1, all I could confirm the iodine peak.

Experimental Example 2: Energy-dispersive X-ray spectroscopy

The high-purity graphite, the low-grade graphite and the Kish Graphite of Production Example 1 and the graphite of Production Examples 1-1 to 1-3 prepared therefrom were analyzed using an energy dispersive X-ray spectroscopy The results are shown in Table 3.

division C O H I High purity graphite 98.80 1.20 - - Production Example 1-1 95.49 5.04 - 0.49 Low grade graphite 97.86 1.52 - - Production Example 1-2 90.50 6.23 - 3.28 Kish Graphite 99.40 0.60 - - Production Example 1-3 91.73 6.44 - 1.83

In the case of iodine-functionalized graphite produced using low-grade graphite or kish-graphite of Production Examples 1-2 and 1-3 in comparison with graphite in which iodine-functionalized graphite produced using the high-purity graphite of Production Example 1-1 was used, It was confirmed that the doping efficiency of atomic iodine was remarkably increased by 5 times or more.

Experimental Example 2: TGA thermal analysis

The graphite produced in Production Example 1 and the raw graphite were subjected to thermal analysis in a TGA (Thermogravimetric Analysis) air atmosphere by weight change according to a change in temperature, and are shown in FIGS. 2A, 2B and 2C.

2A, it was confirmed that the high purity graphite had a mass of about 24% remaining at 1000 DEG C, and 0.0% of the graphite of Production Example 1-1 showed almost no organic matter.

In FIG. 2B, the lower graphite had a mass of about 34.5% at 1000.degree. C. and the graphite of Production Example 1-2 had only a small amount of inorganic matter of about 3.2%.

In Fig. 2C, the Kishy graphite has a mass of about 7.4% at 1000 DEG C, and the graphite of Production Example 1-3 shows only about 5.7% of the inorganic matter.

Experimental Example 3: Electrochemical Characterization

The electrochemical characteristics of the graphite produced in Production Example 1 and its raw graphite were confirmed by cyclic voltammetry and shown in FIGS. 3A, 3B and 3C.

Regardless of the type of graphite, the graphite with the iodine functionalities showed an onset voltage of 0.1 V and a higher relative current than graphite. However, when graphite having a large particle size as shown in FIG. 3B and FIG. 3C is used as a starting material, a graphite having an iodine-functionalized edge produced higher current density than graphite having a high purity as a starting material Respectively.

Experimental Example 4: Characterization of Particles

The average particle size, BET surface area and void volume of the graphite produced in Production Example 1 are shown in Table 4.

division Average particle size BET surface area Pore volume Production Example 1-1 300 탆 662.2 m ² / g 341.3 [mu] l / g Production Example 1-2 300 탆 968.6 m ² / g 889.6 [mu] l / g Production Example 1-3 300 탆 924.3 m ² / g 848.4 [mu] l / g

Production Example 2: Preparation of graphite with iodine-functionalized edge according to graphite average particle size

Graphite having an average particle size of 4.2 mm used in Production Example 1 was crushed with a ball mill before being mixed with iodine in the same manner as Production Example 1 to obtain an average particle size of 2 mm, 1 mm, 0.5 mm, 0.25 mm and 0.125 mm was prepared in the same manner as in Preparation Example 1, and graphite powder having an edge functionalized with iodine was prepared in the same manner as in Production Example 1, using each graphite powder. Production Example 2-2, Production of Graphite Cr with an average particle size of 1 mm, Manufacturing Example 2-1, Use of Graphite Cr with an average particle size of 2 mm, 0.5 mm of graphite pulverized product was used in Production Example 2-05, Production Example 2-025 in which a graphite pulverization product having an average particle size of 0.25 mm was used, Production Example 2-0125 in which a graphite pulverization product having an average particle size of 0.125 mm was used, Respectively.

Table 5 shows the particle characteristics of the graphite powder used for producing the graphite in which the edge was functionalized with iodine.

division Average particle size BET surface area Pore volume Low grade graphite 4.2 mm 2.78 m ² / g 1.6 μl / g Low grade graphite powder 2.0 mm 2.11 m ² / g 2.0 μl / g Low grade graphite powder 1.0 mm 3.21 m ² / g 4.6 μl / g Low grade graphite powder 0.5 mm 2.18 m ² / g 5.9 [mu] l / g Low grade graphite powder 0.25 mm 2.36 m ² / g 3.1 μl / g Low grade graphite powder 0.125 mm 1.15 m ² / g 6.7 μl / g

Experimental Example 5: Energy-dispersive X-ray spectroscopy II

Table 6 shows the iodine atom doping efficiencies of the graphite functionalized with iodine by using the lower graphite pulverized product of Production Example 2 in the same manner as in Experimental Example 2. [

division C O H I Production Example 1-2 90.50 6.23 - 3.28 Production example 2-2 92.55 5.21 - 3.11 Production Example 2-1 91.43 4.88 - 2.67 Production Example 2-05 90.31 6.01 - 2.32 Production example 2-025 91.27 5.87 - 1.56 Production Example 2-0125 90.66 6.12 - 0.44

Production Example 2-0125 shows that the doping efficiency of the iodine atom was 0.5% or less in Production Example 1-1 prepared using the high purity graphite, but the doping efficiency of the iodine atom increased sharply as the average grain size of graphite increased there was. This is because, when the average particle size of the graphite is large, the number of carbon atoms at the edge portion, which can increase the reactivity in the form of a charge or a radical in the mechanical grinding process of the present invention, It is believed that the amount of the edge carbon which becomes charged as a result of the crushing of the graphite or in the form of the radical increases and the doping efficiency of the heteroatom bonded thereto increases.

Production Example 3: Preparation of edge-functionalized graphite according to external atmosphere

Graphite was produced by using the high-purity graphite of Production Example 1 and the low-grade graphite, respectively, in the same manner as in Production Example 1 except that the outside atmosphere material was different.

The outer atmosphere material for 5 g of graphite was dry ice 100 g, sulfur trioxide 5 ml, and ammonia gas, respectively.

Experimental Example 6: Energy dispersive X-ray spectroscopy II

Table 7 shows the heteroatom doping efficiencies of the graphite functionalized with iodine in Production Example 3 in the same manner as in Experimental Example 2. [

division Raw graphite Outer atmosphere substance Heteroatom Doping efficiency Production Example 3-11 High purity graphite Dry ice O 8.03 Production Example 3-12 Low grade graphite Dry ice O 10.00 Production example 3-21 High purity graphite Sulfur trioxide S 7.18 Production example 3-22 Low grade graphite Sulfur trioxide S 9.54 Production example 3-31 High purity graphite Ammonia gas N 2.95 Production example 3-32 Low grade graphite Ammonia gas N 4.77

In experiments using not only iodine but also other atmospheric substances, it was confirmed that the doping efficiency of the heteroatom significantly increased when low grade graphite having a large particle size was used.

Claims (14)

Mechanically pulverizing graphite having an average grain size of 0.2 to 50 mm in the presence of at least one outer atmosphere material. The method according to claim 1, wherein the graphite has an average particle size of 0.6 to 30 mm. The method of claim 1, wherein the graphite is a low grade graphite having a carbon element content of 50 to 99%. 4. The method of claim 3, wherein the graphite is a low grade graphite having a carbon element content of 60 to 80%. The method of claim 1, wherein the graphite has a BET surface area of 1.5 to 5 m ² / g. 6. The method of claim 5, wherein the graphite has a pore volume of 3 to 30 mu g / g. The method of claim 1, wherein the outer atmosphere material is selected from the group consisting of air, methane, ethane, carbon monoxide, carbon dioxide, nitrogen dioxide, ammonia, florine, chlorine, hydrogen fluoride, hydrogen bromide, hydrogen chloride, hydrogen cyanide, hydrogen sulfide, , Ethanol, isopropyl alcohol, sulfuric acid, nitric acid, acetic acid, normal hexane, cyclohexane, heptane, toluene, benzene, acetone, N-methylpyrrolidone, tetrahydrofuran, dimethylacetamide, dimethylformamide, But are not limited to, ethyl acetate, methyl ethyl ketone, xylenes, dichlorobenzene, trichlorobenzene, dichloromethane, chloroform, carbon tetrachloride, bromine, tribromoboron, iodine, sodium hydroxide, Sodium carbonate, sodium carbonate, potassium carbonate, sodium sulfate, sodium nitrate, sodium chloride, ammonium chloride, boron trioxide, boronic acid, aminobenzoic acid, Functional graphite characterized in that it is selected from the group consisting of ruborobenzoic acid, bromobenzoic acid, thiolbenzoic acid, maleic acid, sulfur, phosphorus, selenium, tellurium, antimony and combinations thereof. 3. The graphite according to claim 1, wherein the edge functionalized graphite is a functional group bonded to the edge of graphite, wherein the functional group is an isocyanate group, an isobutyl group, a cyclohexyl group, a hydroxyl group, a lactone group, An amino group, an imide group, an azide group, a cyanic acid group, a nitryl group, a nitro group, a nitro group, a nitro group, a pyridine group, a phosphine group, a phosphoric acid group, a phosphonic acid group, A carboxyl group, a carboxylic acid ester group, a haloformyl group, an ether group, an ester group, a peroxy group, a hydroperoxy group, an acyl halide group, a fluoro group, a sulfo group, a sulfone group, a sulfoxide group, a thiol group, a sulfide group, a carbonyl group, Wherein the functional group is selected from the group consisting of a chlorine atom, a chlorine atom, a bromine atom, an iodine atom, and a combination thereof. The method according to claim 1, wherein the step of pulverizing the graphite is performed at a speed of 100 to 10,000 rpm for 1 to 100 hours. 10. The method of claim 9, wherein the grinding of the graphite is carried out until the internal temperature of the grinder rises to 260 to 500 占 폚. A method for producing an edge-functionalized graphene nanoplate comprising the method of any one of claims 1 to 9. An edge-functionalized graphene nanoplate produced by the method of any one of claims 1 to 9 and characterized by a BET surface area of 800 to 2,000 m ² / g. The edge graft nanolate plate according to claim 12, wherein the pore volume is 0.5 to 2 ml / g. The edge functionalized graphene nanoflag according to claim 12, characterized in that the average diameter is 20 to 500 nm.

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