CARBONATE PRECURSORS FOR HIGH LITHIUM AND MANGANESE CONTAINING CATHODE MATERIALS

摘要

A carbonate precursor compound of a lithium manganese based oxide powder for a positive electrode of a rechargeable battery, the oxide having the general formula Li1+vM1-vO2, wherein -0.03≤v≤0.25, wherein M is a composition comprising at least 50mol% of manganese, and wherein the carbonate precursor compound has a secondary particle size D50 expressed in µm, and a tap density TD expressed in g/cm3, with either ≤ TD ≤ (2.78*D50)/(D50+7.23) and the compound having a particle size distribution having a span S≤1.8 with S=(D90-D10)/D50; or 1 ≤ TD ≤ (2.78*D50)/(D50+7.50).