Improved Li-Ion Battery Performance Using Li-Mn Spinel / Li-Ni-Co-Mn Oxide as the Positive Electrode

摘要

Lithium manganese oxide (LiMn_2O_4) with a spinel structure has always been an attractive positive electrode material for Li-ion batteries because of its high-rate capability,low cost,and excellent tolerance to abuse.However,when the material is cycled or stored at elevated temperatures,it has been observed that Mn ions dissolve into solution,eventually leading to capacity fade.