An innovative approach to design SOFC air electrode materials: high entropy La1−xSrx(Co,Cr,Fe,Mn,Ni)O3−δ(x= 0, 0.1, 0.2, 0.3) perovskites synthesized by the sol–gel method

For the first time, the high entropy perovskites from La_1−xSrx(Co,Cr,Fe,Mn,Ni)O₃₋δ(x= 0, 0.1, 0.2, 0.3, 0.4 and 0.5) series are documented to possess attractive properties as a candidate air electrode material for Solid Oxide Fuel Cells (SOFCs).