Porous carbon material preparing method

The invention discloses a porous carbon material preparing method and belongs to the technical field of porous carbon material preparation. By adjusting the usage of activator, the activating temperature and activating time, the specific surface of the porous carbon material is larger than 2000m2/g, micro holes and macro holes with two grades of pore diameters are distributed, the specific capacitance of an alkaline aqueous system can be 280 F/g, the specific capacitance of an acidic aqueous system can be 320 F/g, and the specific capacitance of an organic electrolyte system can be 130 F/g; on the conditions of 7K and 1atm, the hydrogen storage capacity can be 2.1wt%. The porous carbon material has high application values in the fields of gas storage and separation, catalysts and catalyst carriers, sewage treatment, precious metal recycling, prepolymer prepared through carbide ceramics, battery and capacitor electrode materials; according to the method, the equipment requirements are low, process is simple, raw materials are low in cost and easy to obtain, the preparing conditions are free of location limitation, and the method is adaptive to large-scale industrial production.