EFFECT OF TREATMENT OF ACTIVATED CARBON-FIBER CLOTH ELECTRODES WITH COLD-PLASMA UPON PERFORMANCE OF ELECTRIC DOUBLE-LAYER CAPACITORS

Charge/discharge behavior of electric double-layer capacitors composed of activated carbon fiber cloth (ACFC) electrodes and an organic elec trolyte was investigated. The modification of the ACFC electrodes was performed using cold plasma generated in argon-oxygen atmosphere. The effect of the cold plasma treatment of the ACFC electrodes on the capa citor performance was discussed on the basis of the physical and chemi cal properties of the ACFC surface such as pore radius distribution an d surface atom concentration.