Li4 P2 N2 O4

Li₄P₂N₂O₄ is an experimental lithium phosphorus oxynitride ceramic compound belonging to the family of mixed-anion ceramics that combine phosphate and nitride chemistry. This material is primarily of research interest rather than established industrial production, as it represents an emerging class of compounds being investigated for solid-state electrolyte applications where the combination of lithium mobility, chemical stability, and mechanical rigidity are desirable. The material's significance lies in its potential to enable safer, higher energy-density battery systems by replacing liquid electrolytes, though it remains in development stages and is not yet widely adopted in commercial applications.