Patent ID: 8182727

Claim:
A method of producing a carbon-based material, the method comprising: (a) mixing an elastomer and at least a first carbon material and dispersing the first carbon material by applying a shear force to obtain a composite elastomer; (b) heat-treating the composite elastomer to vaporize the elastomer included in the composite elastomer to obtain a second carbon material; and (c) heat-treating the second carbon material together with a substance including an element Y and having a melting point lower than a melting point of the first carbon material to vaporize the substance including the element Y, to obtain the carbon-based material, wherein the step (b) is performed in the presence of a substance including an element X such that the element X bonds to a carbon atom of the first carbon material, the element X is oxygen or nitrogen, the element Y is magnesium, the heat treatment temperature in step (c) is equal to or higher than the vaporization temperature of magnesium and is not higher than 570° C., and the heat treatment of step (c) is carried out in a nitrogen atmosphere.