Li4Mn3Fe2O10

Li₄Mn₃Fe₂O₁₀ is a mixed-valence lithium manganese iron oxide ceramic compound under investigation as a cathode material for lithium-ion battery systems. This material belongs to the family of layered oxide battery cathodes, where the combination of manganese and iron creates a high-capacity, lower-cost alternative to traditional single-transition-metal oxides. Research interest in this composition stems from its potential to improve energy density and reduce reliance on expensive cobalt while maintaining electrochemical stability, though it remains primarily in the experimental phase rather than in widespread commercial deployment.