Patent ID: 8399046

Claim:
A preparation method of a metal oxide doped monolith carbon aerogel for a high capacitance capacitor, comprising: preparing a monolith carbon aerogel by performing a thermal decomposition of a moist gel dried in condition of a high pressure in a nitrogen atmosphere, wherein the moist gel is provided in a circular shape or a cylindrical shape with a diameter of 5 mm to 10 mm, wherein a step for preparing a monolith carbon comprises: preparing a sol by placing, into a distilled water, carbonic acid(Na2CO3) that is resorcinol and basic catalyst and mixing, and then injecting formaldehyde, preparing the moist gel by gelling the sol in a temperature of 60 to 90° C. for 48 to 80 hours, substituting the distilled water contained in the moist gel with acetone, and drying the moist gel in an atmospheric pressure and a room temperature for 10 to 30 hours and in a temperature of 40 to 80° C. for 10 to 30 hours, wherein in the preparing of the sol, a mol ratio of resorcinol:catalyst is 400 to 600:1, and a mol ratio of resorcinol:formaldehyde is 1:2, wherein the moist gel in the substituting is immersed into acetone in a temperature of 40 to 50° C. for 24 hours, and new acetone is substituted every three hour; impregnating an alcohol, where a metal precursor is dissolved, into the monolith carbon aerogel, wherein the monolith carbon aerogel is impregnated with the alcohol where the metal precursor is dissolved, in the temperature of 40 to 70° C. for one to six hours, wherein a mol ratio of metal precursor:alcohol is 0.0005 to 0.005:1; and calcinating the monolith carbon aerogel where the metal precursor is impregnated in an atmospheric atmosphere.