Li4 Mn3 Fe2 Cu3 O16

Li₄Mn₃Fe₂Cu₃O₁₆ is a mixed-metal oxide ceramic compound combining lithium with manganese, iron, and copper cations in a complex crystal structure. This is a research-phase material investigated primarily for energy storage and electrochemical applications, particularly as a potential cathode material or electrodes in lithium-ion batteries and related electrochemical devices where the multi-valent transition metals (Mn, Fe, Cu) can facilitate ion transport and electron conduction. The material's appeal lies in its use of abundant elements (iron, manganese) as alternatives to cobalt-heavy cathodes, though it remains largely in the exploratory stage relative to commercial battery systems.