ACTIVATED CARBON FIBER FOR CAPACITOR ELECTRODE AND ELECTRIC DOUBLE LAYER CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide an activated carbon fiber for capacitor electrode, which enables an electric double layer capacitor high in electrostatic capacitance and superior in performance, to be realized.

SOLUTION: The activated carbon fiber can be obtained by thermally treating carbon fiber and an alkaline metal compound at temperatures of 650 to 800°C. It is characterised in that its specific surface area is 1,000 to 1,500 m2/g, oxygen content is 3.5 wt.% or below, and residue of alkaline metal is 1,000 ppm or below.

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