Cobalt, Lanthanum and Strontium are very common components in perovskite, a type of crystalline material. The compositions of perovskites are very varied, and modifications of the structure to better efficiency and durability are a major research topic in solid oxide fuel cells, especially since perovskites can be used as both electrodes and electrolytes in SOFC. A great example that includes all three is the perovskite lanthanum strontium cobalt ferrite (LSCF), one of the leading materials for Intermediate temperature SOFCs that possesses mixed ionic and electronic conductivity (MIEC). Though cobalt containing cathodes are known to have good performance, there is also a lot of interest in cobalt-free cathodes due to high cost and compatibility issues with electrolytes. 296 Many of these cobalt free perovskites still contain La and Sr as well as other elements like Fe, Ba, Cu, Ti, Cr, Sm among others that are reflected in Figure .