Haldor Topse A/s

Christian Fink ElkjÆr

Søren Dahl

Jakob Weiland Høj

Jonathan H∅jberg

A lithium positive electrode active material including at least 95 wt % spinel having a chemical composition of LiNiMnD1D2O, wherein 0.9&#x2264;x&#x2264;1.1, 0.4&#x2264;y&#x2264;0.5, 0.005&#x2264;z1&#x2264;0.2, 0&#x2264;z2&#x2264;0.2, wherein D1 and D2 are dopants chosen between the following elements: Co, Cu, Ti, Zn, Mg, Fe or combinations thereof. D1 and D2 are different dopants, and the lithium positive electrode active material is a powder composed of material particles, wherein the distribution of dopant D1 is non-uniform along a radial axis of the material particles and the distribution of the dopant D2 is substantially uniform along the radial axis of the material particles. Also, a process for preparing the lithium positive electrode active material and a secondary battery comprising the lithium positive electrode active material.

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Birkerød, Denmark

Christian Fink ElkjÆr