Li4 Fe3 Cu1 O8

Li₄Fe₃Cu₁O₈ is a mixed-metal oxide semiconductor combining lithium, iron, and copper in a single crystal structure. This is a research-phase compound under investigation for energy storage and electrochemical applications, belonging to the family of lithium-transition metal oxides commonly explored as cathode materials and ion conductors. The copper incorporation into an iron-lithium oxide framework is notable for potentially tuning electronic and ionic transport properties compared to binary Fe-Li or Cu-Li oxide systems, making it of interest in the broader pursuit of advanced battery materials and solid-state electrolytes.