Metal oxide containing multiple dopants and method of preparing same

Abstract

The present invention relates to metal oxides containing multiple dopants. The metal oxides have the formula: LiMy−x[A]xOz or My−x[A]xOz, wherein M is a transition metal, 0 < x ≤ y , ⁢ [ A ] = ∑ i = 1 n ⁢ ⁢ w i ⁢ B i wherein Bi is an element used to replace the transition metal M and wi is the fractional amount of element Bi in the total dopant combination such that ∑ i = 1 n ⁢ ⁢ w i = 1 , n is the total number of dopant elements used and is a positive integer of two or more, wherein the fractional amount wi of dopant element Bi is determined by the relationship ∑ i = 1 n ⁢ ⁢ w i ⁢ E i = the ⁢ ⁢ oxidation ⁢ ⁢ state ⁢ ⁢ of ⁢ ⁢ ⁢ the ⁢ ⁢ transition ⁢ ⁢ ⁢ metal ⁢ ⁢ M ± 0.5 , Ei is the oxidation state of dopant Bi in the final product LiMy−x[A]xOz or My−x[A]xOz, the dopant elements Bi are cations in the intercalation compound, and the ratio of Li to O in the intercalation compound is not smaller than the ratio of Li to O in the undoped compound LiMyOz or MyOz. The present invention also includes methods of preparing same and specific embodiments of same.

Dependencies are inferred from the claim text.