Improved electrochemical performance and thermal compatibility of Fe- and Cu-doped SmBaCo2O5+δ-Ce0.9Gd0.1O1.95 composite cathode for intermediate-temperature solid oxide fuel cells

▶ Gd-doped ceria (CGO) with Fe- and Cu-doped SmBaCo2O5+δ composite cathodes for solid oxide fuel cells ▶ Composite cathodes are synthesized via combustion method followed by organic precipitation. ▶ 30 wt.% CGO - 70 wt.% SmBaCo2/3Fe2/3Cu2/3O5+δ demonstrates enhanced electrochemical performance. ▶ The composite cathode exhibits good chemical and thermal compatibility.