公开(公告)号：US10601041B2

公开(公告)日：2020-03-24

申请号：US16371474

申请日：2019-04-01

Applicant: HALDOR TOPSØE A/S

Inventor： Jonathan H∅jberg ,  Jakob Weiland Høj ,  Søren Dahl ,  Christian Fink ElkjÆr

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  H01M4/02

Abstract: A lithium positive electrode active material including at least 95 wt % spinel having a chemical composition of LixNiyMn2-y-z1-z2D1z1D2z2O4, wherein 0.9≤x≤1.1, 0.4≤y≤0.5, 0.005≤z1≤0.2, 0≤z2≤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.