The method of claim 5, wherein the process of preparing the solution that includes the graphene oxide slurry replaced by the first non-aqueous based solvent includes: perfo rm ing mechanical dispersion treatment and centrifugation after mixing the graphene oxide aqueous slurry and the first non-aqueous based solvent. ' 7. The method of claim 6, wherein the mechanical dispersion treatment and centrifugation is perfo rm ed at least twice, and the method further includes separating a supernatant after each centrifugation.

The method of claim 5, wherein the graphene oxide in the graphene oxide slurry replaced by the first non-aqueous based solvent is included in an amount of about 2 to about 7 wt% based on the total weight of the graphene oxide slurry replaced by the first non-aqueous based solvent.

The method of claim 5, wherein the first non-aqueous based solvent or the second nonaqueous based solvent is an amphiphilic solvent, a water-miscible solvent, a water- immiscible solvent, a polar solvent, a nonpolar solvent, or a combination thereof.

(Previously Amended) The method of claim 5, wherein the first non-aqueous based solvent or the second non-aqueous based solvent is IPA, ethanol, acetone, methylethylketone, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetylacetone, butyl alcohol, ethylene glycol, polyethylene glycol, tetrahydrofuran, dimethylformamide, dimethyl acetamide, N-methyl-2-pyrrolidone, hexane, cyclohexanone, toluene, chloroform, dichlorobenzene, dimethylbenzene, trimethylbenzene, pyridine, methylnaphthalene, nitromethane, acrylonitrile, octadecylamine, aniline, dimethylsulfoxide, or a combination thereof.

The method of claim 5, wherein the dispersing agent is polyethylene glycol (PEG), glycerol, hydrochloric acid (HCl), acetic acid, formic acid, citric acid, a polymer, or a combination thereof.

The method of claim 5, wherein the sol solution for the graphene oxide-ceramic hybrid coating layer composition further includes an additive selected from the group consisting of: polyethylene glycol, glycerin, glucose, a polymer, and a combination thereof.

The method of claim 5, wherein the coating process is performed by dip coating, spin coating, spray coating, paint coating, bar coating, flow coating, roll coating, or a combination thereof. 3

The method of claim 5, wherein the process of preparing the solution that includes the graphene oxide slurry replaced by the first non-aqueous based solvent includes: perfo rm ing mechanical dispersion treatment and centrifugation after mixing the graphene oxide aqueous slurry and the first non-aqueous based solvent. ' 7. The method of claim 6, wherein the mechanical dispersion treatment and centrifugation is perfo rm ed at least twice, and the method further includes separating a supernatant after each centrifugation.

The method of claim 5, wherein the graphene oxide in the graphene oxide slurry replaced by the first non-aqueous based solvent is included in an amount of about 2 to about 7 wt% based on the total weight of the graphene oxide slurry replaced by the first non-aqueous based solvent.

The method of claim 5, wherein the first non-aqueous based solvent or the second nonaqueous based solvent is an amphiphilic solvent, a water-miscible solvent, a water- immiscible solvent, a polar solvent, a nonpolar solvent, or a combination thereof.

(Previously Amended) The method of claim 5, wherein the first non-aqueous based solvent or the second non-aqueous based solvent is IPA, ethanol, acetone, methylethylketone, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetylacetone, butyl alcohol, ethylene glycol, polyethylene glycol, tetrahydrofuran, dimethylformamide, dimethyl acetamide, N-methyl-2-pyrrolidone, hexane, cyclohexanone, toluene, chloroform, dichlorobenzene, dimethylbenzene, trimethylbenzene, pyridine, methylnaphthalene, nitromethane, acrylonitrile, octadecylamine, aniline, dimethylsulfoxide, or a combination thereof.

The method of claim 5, wherein the dispersing agent is polyethylene glycol (PEG), glycerol, hydrochloric acid (HCl), acetic acid, formic acid, citric acid, a polymer, or a combination thereof.

The method of claim 5, wherein the sol solution for the graphene oxide-ceramic hybrid coating layer composition further includes an additive selected from the group consisting of: polyethylene glycol, glycerin, glucose, a polymer, and a combination thereof.

The method of claim 5, wherein the coating process is performed by dip coating, spin coating, spray coating, paint coating, bar coating, flow coating, roll coating, or a combination thereof. 3

The method of claim 5, wherein the process of preparing the solution that includes the graphene oxide slurry replaced by the first non-aqueous based solvent includes: perfo rm ing mechanical dispersion treatment and centrifugation after mixing the graphene oxide aqueous slurry and the first non-aqueous based solvent. ' 7. The method of claim 6, wherein the mechanical dispersion treatment and centrifugation is perfo rm ed at least twice, and the method further includes separating a supernatant after each centrifugation.

The method of claim 5, wherein the graphene oxide in the graphene oxide slurry replaced by the first non-aqueous based solvent is included in an amount of about 2 to about 7 wt% based on the total weight of the graphene oxide slurry replaced by the first non-aqueous based solvent.

The method of claim 5, wherein the first non-aqueous based solvent or the second nonaqueous based solvent is an amphiphilic solvent, a water-miscible solvent, a water- immiscible solvent, a polar solvent, a nonpolar solvent, or a combination thereof.

(Previously Amended) The method of claim 5, wherein the first non-aqueous based solvent or the second non-aqueous based solvent is IPA, ethanol, acetone, methylethylketone, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetylacetone, butyl alcohol, ethylene glycol, polyethylene glycol, tetrahydrofuran, dimethylformamide, dimethyl acetamide, N-methyl-2-pyrrolidone, hexane, cyclohexanone, toluene, chloroform, dichlorobenzene, dimethylbenzene, trimethylbenzene, pyridine, methylnaphthalene, nitromethane, acrylonitrile, octadecylamine, aniline, dimethylsulfoxide, or a combination thereof.

The method of claim 5, wherein the dispersing agent is polyethylene glycol (PEG), glycerol, hydrochloric acid (HCl), acetic acid, formic acid, citric acid, a polymer, or a combination thereof.

The method of claim 5, wherein the sol solution for the graphene oxide-ceramic hybrid coating layer composition further includes an additive selected from the group consisting of: polyethylene glycol, glycerin, glucose, a polymer, and a combination thereof.

The method of claim 5, wherein the coating process is performed by dip coating, spin coating, spray coating, paint coating, bar coating, flow coating, roll coating, or a combination thereof. 3

The method of claim 5, wherein the process of preparing the solution that includes the graphene oxide slurry replaced by the first non-aqueous based solvent includes: perfo rm ing mechanical dispersion treatment and centrifugation after mixing the graphene oxide aqueous slurry and the first non-aqueous based solvent. ' 7. The method of claim 6, wherein the mechanical dispersion treatment and centrifugation is perfo rm ed at least twice, and the method further includes separating a supernatant after each centrifugation.

The method of claim 5, wherein the graphene oxide in the graphene oxide slurry replaced by the first non-aqueous based solvent is included in an amount of about 2 to about 7 wt% based on the total weight of the graphene oxide slurry replaced by the first non-aqueous based solvent.

The method of claim 5, wherein the first non-aqueous based solvent or the second nonaqueous based solvent is an amphiphilic solvent, a water-miscible solvent, a water- immiscible solvent, a polar solvent, a nonpolar solvent, or a combination thereof.

(Previously Amended) The method of claim 5, wherein the first non-aqueous based solvent or the second non-aqueous based solvent is IPA, ethanol, acetone, methylethylketone, methyl alcohol, ethyl alcohol, isopropyl alcohol, acetylacetone, butyl alcohol, ethylene glycol, polyethylene glycol, tetrahydrofuran, dimethylformamide, dimethyl acetamide, N-methyl-2-pyrrolidone, hexane, cyclohexanone, toluene, chloroform, dichlorobenzene, dimethylbenzene, trimethylbenzene, pyridine, methylnaphthalene, nitromethane, acrylonitrile, octadecylamine, aniline, dimethylsulfoxide, or a combination thereof.

The method of claim 5, wherein the dispersing agent is polyethylene glycol (PEG), glycerol, hydrochloric acid (HCl), acetic acid, formic acid, citric acid, a polymer, or a combination thereof.

The method of claim 5, wherein the sol solution for the graphene oxide-ceramic hybrid coating layer composition further includes an additive selected from the group consisting of: polyethylene glycol, glycerin, glucose, a polymer, and a combination thereof.

The method of claim 5, wherein the coating process is performed by dip coating, spin coating, spray coating, paint coating, bar coating, flow coating, roll coating, or a combination thereof. 3