Patent ID: 7205072

Claim:
A positive electrode material of substituted lithium nickel-manganese oxides for a non-aqueous lithium cell, comprising a composition of Li 1+x Ni α Mn β Co γ M′ δ O 2−z X z wherein M′ is selected from the group consisting essentially of Mg, Zn, Al, Ga, B, Zr, and Ti, wherein X is selected from the group consisting essentially of F, Cl and I, wherein x is between a value greater than 0 and about 0.333, α is between about 0.2 and 0.6, β is between about 0.2 and 0.667, γ is between a value greater than 0 and about 0.333, δ is between a value greater than 0 and about 0.2, and z is between a value greater than 0 and about 0.5.