lítiummangánoxid

Lithium manganese oxide, often abbreviated as LMO, is a mixed oxide material with the chemical formula LiMn₂O₄. It is a lithium intercalation compound belonging to the spinel crystal structure group. LMO is primarily known for its use as a cathode material in lithium-ion batteries. Its structure, with manganese ions in a stable octahedral lattice, allows for the reversible insertion and extraction of lithium ions during charging and discharging cycles.

The key advantages of LMO as a cathode material include its relatively low cost, good thermal stability, and high rate capability, meaning it can deliver and accept current quickly. This makes it suitable for applications requiring high power, such as power tools and some electric vehicles. However, LMO generally exhibits lower specific energy density compared to some other cathode materials like lithium cobalt oxide or NMC (nickel manganese cobalt) oxides, and its capacity can degrade over time, especially at elevated temperatures. Despite these limitations, its balance of performance and cost continues to make it a relevant choice for specific battery applications. Research efforts focus on improving its cycle life and energy density through structural modifications and doping.