Controlled Preparation and Characterization of Spherical LiNi[sub 0.5]Mn[sub 1.5]O[sub 4] Cathode Material for Lithium-Ion Batteries

Spinel spherical with high capacity and high tap density is synthesized by controlled precipitation and solid-state reaction. Specifically, through controlling the component of the precursor, the product is the pure phase. The as-prepared powders are spherical, and the tap density reaches . can deliver an initial discharge capacity of 136.7, 129.2, and at 0.2C, 1.0C, and 5.0C rates, respectively, between 3.5 and 5 V, which also demonstrates excellent cyclic performance.