Abstract: Mesoporous carbons (MCs) were made from coal pitch derived from coal liquefaction residue with silica nanoparticles as template and CO₂ as activation agent. The microstructure and electrochemical properties of the MCs were investigated with TEM, N₂ adsorption, an electrochemical workstation and a Land battery test system. Results show that the specific surface area increases with activation time at 900℃ under a CO₂ flow rate of 100mL · min^-1. The specific surface area of MC activated for 150min is 1360m² · g^-1 while that of the un-activated one is 722m² · g^-1. The specific capacitance of the MC activated for 150min is 135F · g^-1 at a current density of 1000mA · g^-1 and the decrease in its specific capacitance is 7% after being charged and discharged 10000 times.