Oxygen Nonstoichiometry and Valence State of Manganese in La Ca MnO.

Perovskites of the ABO type, such as LaMnO, can be used as air electrodes in solid oxide fuel cells and electrolyzers. Their properties can be tuned by A- and B-site substitutions. The influence of La substitution by Ca on the oxygen nonstoichiometry has been investigated frequently, but the results depend highly on the synthesis and atmospheric conditions.