Ternäres Positivelektrodenmaterial mit Niedriger Gaserzeugung und Hoher Kapazität

Details

Veröffentlichungs-Nr.

EP4737397

Anmeldetag

11. April 2020

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

IPC

C01G53/00

Abstract

This disclosure relates to the field of electrochemistry, and in particular, to a positive electrode material. The positive electrode material of this disclosure includes a substrate, with a formula of the substrate being Li<x>Ni<y>Co<z>M<k>Me<p>O<r>A<m>, where 0.95 ≤ x ≤ 1.05, 0.50 ≤ y ≤ 0.95, 0 ≤ z ≤ 0.2, 0 ≤ k ≤ 0.4, 0 ≤ p ≤ 0.05, 1 ≤ r ≤ 2, 0 ≤ m ≤ 2, m+r ≤ 2; a coating layer is disposed on the substrate, where the coating layer includes a coating element; absorbance of nickel leachate per unit mass of the positive electrode material w ≤ 0.7; the coating layer comprises an inner coating layer, the inner coating layer is located on surfaces of at least some primary particles inside the substrate, and the inner coating layer comprises a coating element, wherein the coating element of the inner coating layer is selected from one or more of Al, Zr, Ba, Zn, Ti, Co, W, Y, Si, Sn, B, and P; and wherein the coating layer comprises an outer coating layer, the outer coating layer is located on a surface of the substrate, and the outer coating layer comprises a coating element, wherein the coating element of the outer coating layer is selected from one or more of Al, Zr, Ba, Zn, Ti, Co, W, Y, Si, Sn, B, and P.

Anmelder

Firma

Contemporary Amperex Technology (Hong Kong) Limited

Land

🇭🇰 Hongkong