Synthesis and Physico-Chemical Properties of La0.9Sr0.1Sc1 –xMnxO3 – δ Ceramic Materials with Mixed Electronic and Ionic Conductivity

Perovskite-like materials with mixed ionic and electronic conductivity are considered as promising functional materials for proton-ceramic electrochemical devices. In the present work, a solid-solution series La 0.9 Sr 0.1 Sc 1 – x Mn x O 3 – δ , where scandium ions in the B-cation position are gradually replaced by manganese ions, was obtained and studied for the first time. The obtained materials were certified by X-ray phase analysis, scanning electron microscopy, and energy-dispersive microanalysis. The dopant influence on the studied materials’ sintering ability and morphology is elucidated. The electrical conductivity of the solid solutions as a function of temperature and gas phase humidity was investigated by the dc four-probe method.