Effect of PVA addition on formation of spray-deposited Sm0.5Sr0.5CoO3 thin films on CeO2 substrates

Abstract

Nano-crystalline films of Sm 0.5 Sr 0.5 CoO 3 (SSC) have been formed on CeO 2 substrates by spraying stoichiometric aqueous solution containing Sm, Sr, and Co ions. Effect of polyvinyl alcohol (PVA) addition as a complexing agent in spray solution on stoichiometry, crystallite size, morphology, and transport properties of film are studied. The results showed that the SSC cathode had maximum crystallite size for 40% PVA addition. Electrical performance of film decreases with decrease in the particle size, while the electronic to ionic predominance transition temperature decreases with decreasing particle size. These films are studied for their potential application as a cathodic material in developing intermediate temperature solid oxide fuel cells.

Infrared emissivities and microwave absorption properties of perovskite Sm0.5Sr0.5Co1−xFexO3 (0≤x≤0.5)

“…Strontium-doped samarium cobaltate (Sm 1−x Sr x CoO 3 , SSC) and A, B site doped SSC are being actively developed as one of the most promising cathode materials, even replace the conventional La 1−x Sr x MnO 3 and La 1−x Sr x CoO 3 materials [28][29][30][31][32]. Their researches focused mainly on achieving lower thermal expansion coefficient (TEC) values, at the same time, no decline in electrochemical properties [33][34][35][36][37].…”