Modifiziertes Ternäres Positivelektrodenmaterial mit Hohem Nickelgehalt und Herstellungsverfahren dafür sowie Stromverbrauchende Vorrichtung

Details

Veröffentlichungs-Nr.

EP4737398

Anmeldetag

1. Juni 2022

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

IPC

C01G53/50

Abstract

Provided in the present application is a modified high-nickel ternary positive electrode material, containing a core, an inner coating layer and an outer coating layer. The core contains a high-nickel ternary positive electrode material matrix, which is doped with M1, M2 and W, wherein M1 is one of Mo, Zr, Ti, Sb, Nb and Te; and M2 is one of Mg, Al, Ca, Zn and Sr. The chemical formula of the high-nickel ternary positive electrode material matrix doped with M1, M2 and W is Li<1+a>[Ni<x>Co<y>Mn<z>M1<b>M2<c>W<d>]O<2>, wherein 0.65 ≤ x < 1; 0 ≤ y < 0.3; 0 ≤ z < 0.3; 0 < a < 0.2; 0< b < 0.1; 0 < c < 0.1; 0 < d < 0.1; x + y + z + b + c + d = 1; and optionally, 0.8 ≤ x < 1. The surface layer of the core is further doped with Co. The inner coating layer is a Co-containing compound, and the outer coating layer is an Al-containing compound and a B-containing compound. The present application also relates to a method for preparing a modified high-nickel ternary positive electrode material, and a secondary battery, a battery module, a battery pack and a power-consuming apparatus.

Anmelder

Firma

Contemporary Amperex Technology (Hong Kong) Limited

Land

🇭🇰 Hongkong