Elektrochemische Vorrichtung und Elektronische Vorrichtung damit

Details

Veröffentlichungs-Nr.

EP4773284

Anmeldetag

1. Juli 2025

Veröffentlichung

19. März 2026

Rechtsraum

EP

Abstract

This application provides an electrochemical device and an electronic device containing same. The electrochemical device includes a positive electrode plate. The positive electrode plate includes a current collector and a positive electrode material layer located on at least one surface of the current collector in a thickness direction of the current collector. The positive electrode material layer includes a first positive electrode material layer and a second positive electrode material layer. The second positive electrode material layer is located between the first positive electrode material layer and the current collector. The positive electrode material layer includes a positive active material. The positive active material includes two or more lithium nickel cobalt manganese oxide ternary materials. The two or more lithium nickel cobalt manganese oxide ternary materials are divided into two groups, with a first group of lithium nickel cobalt manganese oxide ternary materials being represented by a chemical formula Li<n1>Ni<x1>Co<y1>Mn<z1>M1<m1>O<2>, satisfying x1 + y1 + z1 + m1 = 1 and 0.15 ≤ y1 ≤ 0.60, with a second group of lithium nickel cobalt manganese oxide ternary materials being represented by a chemical formula Li<n2>Ni<x2>Co<y2>Mn<z2>M2<m2>O<2>, satisfying x2 + y2 + z2 + m2 = 1 and 0 < y2 ≤ 0.14. The two groups of lithium nickel cobalt manganese oxide ternary materials are located in the first positive electrode material layer and the second positive electrode material layer respectively. The positive electrode plate meets the above characteristics, thereby improving the discharge performance of the electrochemical device at a low temperature and a low SOC.

Anmelder

Firma

Ningde Amperex Technology Limited

Land

🇨🇳 China