This study surveys the results obtained at the Institute of High Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences on the physicochemical properties of proton-conducting materials based on LaScO₃ and analyzes the literature data.

The phase composition was studied and overall conductivity of oxides La1 − xSr xScO3 − α ( x = 0.01−0.20) was measured as dependent on air humidity ( pH2O = 0.04−2.35 kPa) in the temperature range...

Transport numbers of ions and protons are measured on ceramic samples of La_{1 − x} Sr _x ScO_{3 − α} (x = 0.01–0.15); partial conductivities (hole, proton, and oxygen-ion) are determined in the temperature range of 500–900°C at pH₂O = 0.04–2.35 kPa and pO₂ from air to 10⁻¹⁵ Pa.