Positivelektrodenaktivmaterial für Lithiumsekundärbatterie, Verfahren zur Herstellung Davon, Positivelektrode und Lithiumsekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4760813

Anmeldetag

6. August 2025

Veröffentlichung

12. Februar 2026

Rechtsraum

EP

Abstract

According to an embodiment of the present disclosure, provided is a positive electrode active material for lithium secondary battery, comprising: a lithium compound represented by the following Formula 1, and a carbon coating layer formed on the particle surface of the lithium compound, wherein the lithium compound has the form of secondary particles having a structure in which primary particles are aggregated each other, the average diameter(D50) of the secondary particles is 0.2 to 10 µm, the average diameter(D50) of the primary particles is 10 to 300 nm, and the ratio of the average diameter(D90)/average diameter(D10) of the secondary particles is 15 to 80, a method for preparing the same, a positive electrode and a lithium secondary battery comprising the same: [Formula 1] Li<1+a>M1<b>M2<c>O<2-d>X<d> wherein, in Formula 1, M1 is one or more selected from the group consisting of Ni, V, Mn, Mo, Cr, and Fe, and M2 is one or more selected from the group consisting of Ti, Zr, Nb, Mo, Ta, and W, 0.1≤a≤0.5, 0.2≤b≤0.6, 0.2≤c≤0.6, 1.05≤(1+a)/(b+c)≤1.5, 0≤d≤0.2, and X is a halogen element.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea