MnMnO3

MnMnO3 is a mixed-valence manganese oxide ceramic compound that belongs to the perovskite or perovskite-related oxide family, where manganese occupies both A and B crystallographic sites. This material is primarily studied in research contexts for its potential as a functional ceramic in energy storage, catalysis, and electronic applications, particularly in systems requiring manganese's variable oxidation states. It is noteworthy as an alternative to simpler binary manganese oxides (MnO, MnO₂) when controllable electronic and ionic transport properties are needed, though it remains less common in mature industrial applications compared to widely deployed spinels or layered oxides.