Dotiertes Lithium Positivelektroden-Aktivmaterial und Verfahren zur Herstellung davon

Details

Veröffentlichungs-Nr.

EP3567658

Aktenzeichen

EP19165390

Anmeldetag

27. März 2019

Veröffentlichung

30. Dezember 2020

Erteilung

30. Dezember 2020

Rechtsraum

EP

IPC

H01M4/131H01M4/1391H01M4/485H01M4/505H01M4/525H01M10/0525// H01M4/02

Abstract

The invention relates to a lithium positive electrode active material comprising at least 95 wt% spinel having a chemical composition of Li_xNi_yMn_2-y-z1-z2D1_z1D2_z2O₄, 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. The invention also relates to a process for preparing the lithium positive electrode active material of the invention and a secondary battery comprising the lithium positive electrode active material of the invention.

Anmelder

Firma

Haldor Topsøe A/S

Land

🇩🇰 Dänemark

Fachgebiete