Synthesis and Properties of La0.95Sr0.05ScO3–δ Protic Electrolyte Films on Porous Cathode Material

Abstract

Fundamental aspects of the phase formation and morphology of films of the proton-conducting solid electrolyte La_0.95Sr_0.05ScO_3–δ, produced by wet deposition from inorganic salts on a porous cathode substrate La_0.6Sr_0.4MnO_3–δ. The conditions in which gas-tight films are deposited onto substrates with porosity of up to 25% were determined. The electrical conductivity of La_0.95Sr_0.05ScO_3–δ films was examined in relation to temperature and gas-phase composition (рН₂О, рО₂). The effect of the architecture of the electrolyte membrane on its transport properties was analyzed. The results of the study are of fundamental importance for development of proton-ceramic fuel cells with a supporting electrode.