Enhancing Lithium Manganese Oxide Electrochemical Behavior by Doping and Surface Modifications

Lithium manganese oxide is regarded as a capable cathode material for lithium-ion batteries, but it suffers from relative low conductivity, dissolution in electrolyte and structural distortion cubic to tetragonal during elevated temperature tests. This review covers comprehensive study about the main directions taken into consideration supress drawbacks of lithium oxide: structure doping surface modification by coating. Regarding LiMn2O4, several perspectives are studied, which include with single or multiple cations, only anions combined cations anions. Surface approach consists coating different materials like carbonaceous compounds, oxides, phosphates solid solutions. The modified performs better than pristine samples, showing improved cyclability, behaviour at high discharge c-rates temperate improves ions diffusion coefficient.