Nitrogen-enriched mesoporous carbon which has been successfully prepared from quinoline-polymerized pitch using mesoporous silica as a template denoted ordered hexagonal assembly of fibrous carbon having ca. 6-7 nm in diameter and higher capacitance amounting to 200-300 F.g(-1) in H2SO4 electrolyte than ordinary mesoporous carbons prepared using divinylbenzene as a carbon precursor (< 180 F.g(-1)).