NOVELTY - Ultracapacitor electrodes are fabricated by fabricating a working electrode by thoroughly mixing an activated lamp black carbon with graphite and a binder in a solvent; and pasting the mixture on a stainless steel mesh used as a current collector to carry out electrochemical measurements in sulfuric acid or potassium hydroxide electrolyte to get a specific capacitance of 50-82 F/g.    USE - For fabricating ultracapacitor electrodes used in electrochemical double layer capacitors which can be used in applications like hybrid power systems, electric vehicles, military and medical applications, actuators and motor drive.    ADVANTAGE - The inventive process provides an easy and economical procedure for obtaining activated carbon from lamp black. It uses the activated carbon from lamp black as an ultracapacitor electrode material with a specific capacitance value of 82 F/g in 1M H2SO4 at a scan rate of 1 mV/second. The preparation of lamp black carbon as an electrode material for ultracapacitor is simple without the need for any high temperature activation. The inventive process has performance characteristics, e.g. time response far exceeding the existing carbon based ultracapacitor. Certain difficulties due to high resistance of the activated carbon are generally avoided by mixing a large amount of graphite, which is not essential since the carbon itself has high conductivity.    DETAILED DESCRIPTION - Fabrication of ultracapacitor electrodes using an activated lamp black carbon includes burning a fatty substance in a lamp using a cotton wick; collecting soot over a flame on a metallic surface to obtain carbon deposit; grinding the carbon deposit to form a homogeneous mixture; activating the homogeneous mixture of carbon to obtain the activated lamp black carbon; fabricating a working electrode by thoroughly mixing the activated lamp black carbon with graphite and a binder in a solvent; and pasting the mixture on a stainless steel mesh used as a current collector to carry out electrochemical measurements in sulfuric acid (H2SO4) or potassium hydroxide (KOH) electrolyte to get a specific capacitance of 50-82 F/g.    DESCRIPTION OF DRAWING(S) - The figure is a cyclic voltammogram of an activated lamp black carbon at a scan rate of 1 mV/second in 1M sulfuric acid.