The solid oxide fuel cell (SOFC) technology has attracted much attention in the last two decades. SOFC has many advantages over other powerproducing technologies, including a high electric conversion efciency that is not limited by Carnot cycle considerations because the chemical energy is directly converted into electricity together with lots of heat inside the SOFC chamber. A SOFC produces heat and power, which improves its efciency up to about 80%. In addition, a SOFC has an excellent environmental performance because there is only water and CO2 emission from a fuel cell with O2 as the oxidant.1