Reversible Solid oxide cells (rSOCs) are electrochemical energy conversion devices to convert chemical energy of fuels such as hydrogen, natural gas to electricity with high efficiency and low greenhouse emission as compared to conventional power generation plants. RSOCs generally operate at high temperatures of 900-1000°C which leads to high system costs and performance degradation. Therefore, decreasing the operating temperature will provide more opportunities for the material selection and decreasing fuel cells’ cost to allow them competitive with traditional power generation system. However, reducing the operation temperature would result in an increase of ohmic resistance of electrode and electrolyte and electrode polarization losses at the electrode/electrolyte interface in the cell.