Li4 Fe2 P4 O14

Li₄Fe₂P₄O₁₄ is a lithium iron phosphate ceramic compound that belongs to the family of polyphosphate materials with potential electrochemical activity. This is a research-phase material primarily investigated for energy storage and solid-state battery applications, where its combination of lithium content and iron-based framework offers promise for lithium-ion conductivity and structural stability. Engineers would consider this material in experimental battery chemistry development where high energy density and thermal stability are targets, though it remains largely in the laboratory stage compared to established commercial phosphate cathode materials.