Na2Co2O3

Na2Co2O3 is a mixed-valence sodium cobalt oxide ceramic compound belonging to the layered oxide family, characterized by a crystal structure combining sodium, cobalt, and oxygen in a 1:2:3 stoichiometric ratio. This material is primarily investigated in research contexts for energy storage and electrochemical applications, particularly as a cathode material for sodium-ion batteries and in solid-state ionic conductors, where its layered structure and mixed oxidation states of cobalt enable promising ion transport and charge storage capabilities. Compared to conventional lithium-based oxides, sodium cobalt oxides offer advantages including lower cost, greater abundance of sodium resources, and potential for high-temperature electrochemical stability, making them of growing interest as lithium supply constraints drive development of alternative battery chemistries.