Direct carbon fuel cells (DCFC) generate electricity through the conversion of chemical energy of carbonaceous fuels. Efficient performance of the cell highly depends on properties of materials used in the cell assembly. Some of the important properties of the materials used for the electrodes are their electrical conductivity, catalytic properties for the corresponding reactions that take place on these electrodes, and their mechanical stabilities for a long-term cell operation. In this paper, modified electrodes with enhanced electrochemical properties were tested within a fuel cell with acid treated carbon black as the fuel and a quaternary electrolyte made of 40.3% Li2CO3/29.0% Na2CO3/23.6% K2CO3/7.1% Cs2CO3. The results are compared in terms of open circuit voltage, power, and current. The experimental studies showed that there is a major effect on overall cell performance with the oxidized nickel foam and its alloys with chrome and iron.