Novel Perovskite Semiconductor Based on Co/Fe-Codoped LBZY (La_0.5Ba_0.5 Co_0.2Fe_0.2Zr_0.3Y_0.3O_3−δ) as an Electrolyte in Ceramic Fuel Cells

Introducing triple-charge (H+/O2–/e–) conducting materials is a promising alternative to modify a cathode as an electrolyte in advanced ceramic fuel cells (CFC). Herein, we designed a novel triple-charge conducting perovskite-structured semiconductor Co0.2/Fe0.2-codoped La0.5Ba0.5Zr0.3Y0.3O3−δ (CF-LBZY) and used as an electrolyte and an electrode. CF-LBZY perovskite as an electrolyte exhibited high ionic (O2–/H+) conductivity of 0.23 S/cm and...