Patent ID: 9590242
Date: 2017-03-07
CPC Classifications: C01G,C01P,H01M,Y02E,Y02P,Y02T

Claim:
1. Precursor particles of a lithium composite transition metal oxide for lithium secondary batteries, wherein the precursor particles are composite transition metal hydroxide particles comprising at least two transition metals and having an average diameter of 1 μm to 8 μm, wherein the composite transition metal hydroxide particles exhibit monodisperse particle size distribution and have a coefficient of variation of 0.2 to 0.7, wherein the composite transition metal hydroxide particles contain an impurity derived from a transition metal salt for preparation of a composite transition metal hydroxide, wherein an amount of the impurity is 0.3 wt % to 0.4 wt % based on of total weight of the composite transition metal hydroxide particles, wherein the impurity is a salt ion comprising a sulfate ion (SO wherein the composite transition metal hydroxide is a compound represented by Formula 1 below: wherein M includes two or more transition metals selected from the group consisting of nickel, cobalt and manganese; and 0≦x≦0.8.