In high-temperature SOFCs, La1-xSrxMnO3- (LSM), has been the material of choice for cathodes and has thus been explored extensively . The material adopts the perovskite structure and doping with strontium replaces lanthanum in the structure and enhances the electronic conductivity of the material by increasing the hole carriers . Doping the material with Sr results in the oxidation of Mn 3+ to Mn 4+ and leaves the oxygen content of the material intact. Thus, the material achieves a superior electronic conductivity, in the range of 200 -300 Scm -1 at 900 °C18 . But because of the limits imposed by either reactivity with other cell components and/or TEC compatibility, the doping level is usually kept under 30 mol percent . On increasing Sr levels beyond this limit, TEC incompatibility and reactions with other cell components such as the formation of SrZrO3 and La2Zr2O7 with YSZ electrolyte have been observed .