Ni based cathode material for rechargeable lithium-ion batteries

The invention provides a positive electrode material for lithium ion batteries, comprising a lithium transition metal-based oxide powder having a general formula Li ((Ni(NiMn) Co) A) O, wherein A is a dopant, with -0.025≤a≤0.025, 0.15≤x≤0.22, 0.42≤z≤0.52, 1.075