Crystal structure and compositional effects on the electrical and electrochemical properties of GdBaCo2−xMnxO5+δ (0 ≤ x ≤ 2) oxides for use as air electrodes in solid oxide fuel cells

GdBaCo_2−xMn_xO_5+δ is a new system of layered perovskites displaying better electrochemical properties when a layered-type ordering of Gd and Ba cations is adopted.