Characterization of perovskite powders for cathode and oxygen membranes made by different synthesis routes

B-site substituted lanthanum strontium ferrites as electrode materials for electrochemical applications

“…Principal process optimization has been carried out on the stoichiometric composition (La 0.8 Sr 0.2 )FeO 3-δ (P5), and thus the synthesized powders characterized in relation to PSD, specific surface area (BET), and phase composition (XRD) [7]. From this analysis, it was observed that the influence of the spraying temperature was negligible concerning surface area and PSD after calcination above 1100°C and a subsequent milling step.…”

“…LSFs with different levels of Sr substitution and co-substituted on the B-site with Ni or Cu were synthesized by a modified spray-pyrolysis process [7][8][9] developed in-house, enabling the production up to 3 kg batches per day of the desired composition. In this paper, the materials properties have been studied regarding phase purity and composition, sintering behavior, and compatibility with yttriastabilized zirconia (YSZ).…”

Synthetic Methods for Perovskite Materials; Structure and Morphology

“…Alternative routes to the solid-state reaction method are wet chemical synthetic methods such as co-precipitation (with oxalates, carbonates, cyanides or any other salt precursors), combustion (including all variants from low to high temperature), sol-gel (and all of its modifications with different chelating ligands), spray-pyrolysis, metathesis reactions, etcetera (Patil et al, 2002;Qi et al, 2003;Royer et al, 2005;Segal, 1989;Sfeir et al, 2005). In all cases the idea is to accelerate the pure phase formation, a goal that is achieved due to the liquid media which permits the mixing of the elements at the atomic level resulting in lower firing temperatures.…”

Chemical Interaction between Perovskite La0.6Sr0.4FeO3and Super-Ionic Zr0.84Y0.16Ox

“…In comparison to lanthanum manganites they exhibit superior performance as SOFC cathode [5,6]. Many attempts have already been made to investigate electrochemical properties and synthesis routes involving both solid state and preferred "soft chemistry" methods [7,8]. It is also investigated as possible thin film cathode material for micro SOFCs applications [9].…”