Layered o-LiMnO2 prepared for lithium ion batteries by mechanical alloying

Layered o-LiMnO2, synthesized by mechanical alloying (MA) with LiOH·H2O and Mn2O3 without any inert atmosphere protection at room temperature, is a potential useful electronic material as cathode for lithium ion batteries. In this study, the effects of solid/liquid weight ratio(S/LWR), ball/powder weight ratio (B/PWR), Li+/Mn3+ mole ratio (L/MMR), MA time (MAT), process control agent (PCA) and synthesis temperature on the structural properties of layered o-LiMnO2 were examined, and it was found that the optimum preparation conditions were B/PWR of 40:1, S/LWR of 2:1, L/MMR of 1.5:1, MAT of 10 h and PCA of deionized water, at which the pure o-LiMnO2 with small particle size and bulk lattice parameter could be synthesized.