TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The heteroatom comprises at least one of boron, phosphorus, manganese, zinc, nickel, arsenic, aluminum, vanadium, gallium or sulfur. The heteroatom is present at 0.01-10 parts by weight. The heteroatom-containing precursor comprises at least one of boric acid, meta-boric acid, tetra-boric acid, boron hydride compound (B19H14), sodium tetraborate decahydrate, sodium perborate monohydrate, sodium metaborate perhydrate, hydrated boron phosphate, phosphoric acid, manganese acetate, zinc chloride, nickel chloride, arsenic chloride, sodium aluminate, vanadium chloride or gallium chloride. The heteroatom-containing precursor is present at 10-1000 parts by weight. The silica nanoparticle in the silica-carbon composite is surface coated by a nano-coating layer formed of a heteroatom oxide. The heteroatom oxide is an oxide of at least one heteroatom of boron, phosphorus, manganese, zinc, nickel, arsenic, aluminum, vanadium, gallium or sulfur. The silica particle is present at 30-50 or 10-90 parts by weight based on 100 parts by weight of the silica sol solution, and the average particle diameter of the silica nanoparticles of the silica sol solution is 4-20 nm. Preferred Method: The method further comprises adding at least one of an acid and a solvent when the carbon precursor mixture is prepared. The drying step is performed at 70-100 degrees C. The carbonizing step is performed at 700-1200 degrees C. The step of removing the silica is performed using hydrofluoric acid, sodium hydroxide, potassium hydroxide, or their aqueous solutions. The silica particles are added as a silica sol solution state with silica nanoparticles in it.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The carbon precursor comprises at least one of a carbohydrate, furfuryl alcohol, divinylbenzene, resorcinol-formaldehyde, an acrylonitrile, a para-toluenesulfonic acid, phenanthrene or anthracene. The acid comprises at least one of sulfuric acid, nitric acid, phosphoric acid, and para-toluene sulfuric acid. The solvent comprises at least one of water, acetone, methanol, ethanol, isopropylalcohol, n-propylalcohol, butanol, dimethylacetamide, dimethylformamide, dimethylsulfoxide, N-methyl-2-pyrrolidone, tetrahydrofuran, tetrabutylacetate, n-butylacetate, meta-cresol, toluene, ethylene glycol, gamma -butyrolactone and hexafluoroisopropanol. EXAMPLE - Sucrose (6.25 g) was added to a solution prepared by mixing sulfuric acid (0.705 g) and distilled water (100 ml). Then, the mixture was dissolved by stirring for 10 minutes until the mixture was completely transparent. Boric acid (5.65 g) was added to the sucrose solution, and then the mixture was dissolved by stirring until the mixture was transparent. Then, Ludox HS-40 (RTM: Aqueous colloidal silica having 40 wt.% of silica particles and average particle diameter of 12 nm) (13.72 g) was added to the mixture, and fully mixed by stirring for 1 minute to prepare a carbon precursor mixture. The prepared mixture was added to a 500 ml beaker and then left for 3 hours in an oven at 80 degrees C to be dried. Then, the resultant mixture was heat treated for another 3 hours in an oven at 160 degrees C. A formed solid was collected from the beaker and placed in a furnace. The temperature of the furnace was increased to 900 degrees C at a rate of 3 degrees C per minute in a nitrogen atmosphere, and then the formed solid was maintained for 3 hours to be carbonized. As a result, a silica-carbon composite was obtained. The prepared composite was added to a 20 wt.% aqueous solution of hydrofluoric acid (200 ml), and stirred for 10 minutes or more and filtered twice to remove silica to give boron-containing mesoporous carbon.