Na2MnO2

Sodium manganese oxide (Na₂MnO₂) is an inorganic ceramic compound containing sodium and manganese in oxidized form, belonging to the broader class of transition metal oxides used in energy storage and electrochemistry. This material is primarily investigated for battery and electrochemical applications, particularly as a cathode material or precursor in sodium-ion batteries, which are gaining industrial attention as a lower-cost, more abundant alternative to lithium-ion systems. Its appeal lies in sodium's natural abundance and lower environmental impact compared to lithium-based technologies, though it remains largely in development or specialized applications rather than widespread commercial use.