Synthesis of an efficient LiMn2O4 for lithium-ion cells

A technique is described which allows to obtain an LiMn2O4 cathode showing high material utilization and extended cycleability at high rates in Li or Li-ion cells. Basically, the precursors, e.g. chemical MnO2 and LiOH, were ground together in the presence of a dispersing agent, e.g. alcohol, so to reduce the particle size to a few microns and to minimize the formation of side products during the synthesis. The spinel so obtained shows limited capacity fading at a current density of 6 mA/cm2 (520 mA/g).