Patent ID: 8574541

Claim:
A process for production of a lithium transition metal oxide comprising: (a) combining solid Li 2 CO 3 and a solid mixed transition metal precursor to form a mixture; (b) performing a solid state reaction of the mixture in air, wherein the air supplied is at least 2 m 3 for 10 hour per 1 of the lithium transition metal oxide; and (c) forming at least about 5 kg of the lithium transition metal oxide, the lithium transition metal oxide having the composition of the general formula Li x ((Ni 1−a−b (Ni 1/2 Mn 1/2 ) a Co b ) 1−k A k ) 2−x O 2 , wherein 0.65≦a+b≦0.85, 0.1≦b≦0.4, A is a dopant, 0≦k<0.05, and 0.95≦x≦1.05.