POROUS CARBON MATERIAL AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a porous carbon material that is used as an active substance in an electric double-layer capacitor and can easily gain desired performances even when any carbon material is used as a source material.

SOLUTION: The porous carbon material 200 has an average outer dimension d of 3 to 80 nm and pores 14 formed from the open end of an outer shell 16 of the porous carbon material to the center portion 18 with an average pore diameter of 0.8 to 3 nm obtained by a nitrogen adsorption method. The half value width of the pore volume in the pore diameter distribution obtained by the nitrogen adsorption method is preferably equal to or less than a half of the average pore diameter. The porous carbon material 200 is preferably granular or sphere, and more preferably, the cross section of the porous carbon material 200 shows approximately concentric orientation of the crystallite.

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