In situ X-ray Raman spectroscopy and magnetic susceptibility study on the Li[Li0.15Mn1.85]O4 oxygen anion redox reaction

Li-rich compounds have received significant attention as an electrode material for lithium-ion batteries (LIBs) because of their large rechargeable capacities (qrecha). We have demonstrated a novel reaction scheme of one of Li-rich compounds, Li[Li0.15Mn1.85]O4, where Mn4+ ions are reduced to lower valance states such as Mn3+ and Mn2+ ions during charging at voltages above 5.0 V.