MANUFACTURING METHOD OF CARBON MATERIAL FOR ELECTRIC DOUBLE-LAYER CAPACITOR ELECTRODE

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an excellent carbon material for an electric double-layer capacitor electrode which has a high capacitance per unit volume and is free from limitations on raw materials.

SOLUTION: The method comprises a step wherein particulate or powdery heavy oil or a heat-treated product of pitch is manufactured by previously loading a particulate or powdery heat-treated product into a reaction vessel at ≥400°C but <600°C and feeding a material heavy oil or pitch into the reaction vessel while stirring it, a step wherein a calcined product of the heavy oil or pitch is manufactured by heat-treating the heat-treated product at 600-850°C and a step wherein an activation-treated product is manufactured by mixing 1-6 pts.wt. alkali metal compound with 1 pts.wt. calcined product and heating the mixture in an inert atmosphere at 400-1,000°C.

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