Process for fabrication of ultracapacitor electrodes using activated lamp black carbon

摘要

Activated carbon obtained from lamp black has a potential application as an electrode material for ultracapacitor. The process involves activation of the lamp black carbon in the temperature range of 600-900° C. for 5-9 hours in an inert atmosphere of nitrogen and argon followed by cooling to room temperature. Cyclic voltammetric studies reveal that the obtained activated carbon has a specific capacitance values in the range 50-82 F/g in 1M H₂SO₄, and 10-25 F/g in 1M KOH. The activated carbon has a highly porous nature as realized from scanning electron microscopy and has specific (BET) surface area in the range of 300-400 m²/g.