METHOD FOR PRODUCING POROUS CARBON MATERIAL, POROUS CARBON MATERIAL AND ELECTRIC DOUBLE LAYER CAPACITOR PRODUCED BY USING THE MATERIAL

摘要

PROBLEM TO BE SOLVED: To produce a porous carbon material having high specific surface area in high yield at a low cost by an oxidizing gas activation method which can be easily incorporated in a process. SOLUTION: This porous carbon material is produced by heating a soft carbon material in the presence of oxygen at a temperature lower than the activation temperature and activating the obtained pretreated product with an oxidizing gas. The pretreatment is preferably carried out at 200-500 deg.C. A porous carbon material having a specific surface area of >=1,000 m2/g and usable as an electrode material for an electric double layer capacitor having high electrical capacitance can be produced by the process.