Kathodenaktivmaterial und Kathode und Lithiumsekundärbatterie damit

Details

Veröffentlichungs-Nr.

EP4765239

Anmeldetag

20. Dezember 2024

Veröffentlichung

26. Juni 2025

Rechtsraum

EP

Abstract

The present invention relates to a positive electrode active material including a lithium composite transition metal oxide in the form of a single particle composed of one nodule or a pseudo-single particle, which is a composite of 30 or fewer nodules, and a coating layer including a first coating layer formed on the surface of the lithium composite transition metal oxide and a second coating layer formed on the surface of the first coating layer, wherein the lithium composite transition metal oxide has a roundness, which is defined by Equation 1 below, of 0.50 to 0.68, and the second coating layer contains boron, wherein the boron is included in a weight of 300 ppm to 2400 ppm based on the total weight of the positive electrode active material. Roundness=4×Area/π×R2In Equation 1 above, R denotes the length of a major axis passing through the center of the lithium composite transition metal oxide, and Area denotes an actual area of the lithium composite transition metal oxide.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea