Pr2NiO4

Pr2NiO4 is a layered perovskite ceramic compound combining praseodymium and nickel oxides, belonging to the family of mixed-valence oxide ceramics. This material is primarily investigated in research settings for electrochemical applications, particularly as a cathode material in solid-oxide fuel cells (SOFCs) and oxygen permeation membranes, where its mixed ionic-electronic conductivity and oxygen-deficiency tolerance make it a candidate for high-temperature energy conversion devices. Engineers evaluate Pr2NiO4 when designing fuel cell systems requiring improved cathode performance at intermediate operating temperatures (700–900 °C), though it remains largely in the development stage compared to established alternatives like perovskites used in production systems.