Positivelektroden-Aktivmaterialien, Positivelektroden und Wiederaufladbare Lithiumbatterien

Details

Veröffentlichungs-Nr.

EP4815048

Anmeldetag

25. März 2026

Veröffentlichung

30. September 2026

Rechtsraum

EP

IPC

H01M4/131, H01M4/36, H01M4/525

Abstract

A positive electrode active material includes a first positive electrode active material having an average particle diameter (D<50>) of greater than or equal to about 10 µm and less than or equal to about 30 µm, with the first positive electrode active material including a first lithium nickel-based composite oxide. The positive electrode active material further comprises a second positive electrode active material having an average particle diameter (D<50>) of greater than or equal to about 5 µm and less than about 10 µm, with the second positive electrode active material including a second lithium nickel-based composite oxide. The positive electrode active material still further comprises a third positive electrode active material having an average particle diameter (D<50>) of greater than or equal to about 0.1 µm and less than about 5 µm, with the third positive electrode active material including a third lithium nickel-based composite oxide. Based on a total weight of the positive electrode active material, a sum weight of the second positive electrode active material and the third positive electrode active material is greater than about 20 wt% and less than about 40 wt%. A powder flow rate measured at 9 kPa using rheometer by adding 200 ml of the positive electrode active material to a 300 ml vessel, fixing the vessel to a device, and moving a blade counterclockwise at a speed of 100 mm/s is greater than or equal to about 4.2.

Anmelder

Firma

SAMSUNG SDI CO., LTD.

Land

🇰🇷 Südkorea

Fachgebiete