High surface area carbon has been prepared by thermo-chemical etching of titanium carbide (TiC) inchlorine in the temperature range 600 – 1200 °C. These materials are used as electrodes forsupercapacitors. The main aim of the work described here is to examine the temperature dependence ofthe electrical transport properties of the TiC CDC (Carbide Derived Carbons) materials. In this article,we present the results of electrical resistivity. The electrical resistivity of titanium carbide derivedcarbons, have been studied as a function of their chlorination temperatures from 600 °C to 1200 °C.The CDC films were prepared on sapphire substrates. Four point probe resistance-temperature studies ina range of 2K to 300 K are performed at zero magnetic field. Resistivity vs. temperature data is fitted tothe variable range-hopping (VRH) model to ascertain the role of structure and composition. In the caseof samples with a low chlorination temperature, a crossover from Mott variable range hopping (VRH) toEfros and Shklovskii VRH upon decreasing the temperature has been experimentally observed. Forthose with a high chlorination temperature, the electrical properties are similar to those of some forms ofpyrolytic graphite.
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