ACTIVATED CARBON, POLARIZABLE ELECTRODE FOR ELECTRIC DOUBLE-LAYER CAPACITOR, AND ELECTRIC DOUBLE-LAYER CAPACITOR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide activated carbon having a good moldability and realizing a high-density, high-capacity electrode; a polarizable electrode for an electric double-layer capacitor; and an electric double-layer capacitor using the same.

SOLUTION: The polarizable electrode (2 and 3 in the figure) for an electric double-layer capacitor is made of activated carbon prepared by activating a hardly graphitizable raw material (e.g. a phenolic resin) with steam. The activated carbon contains ≥10% particles of ≤2 μm in cumulative percentage and has an apparent density of 0.18-0.25 g/cm3and a flowability index of 0.47-0.52. The electric double-layer capacitor (1 in the figure) uses the polarizable electrode.

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