Positivelektrodenmaterial, Positivelektrodenfolie und Lithium-Ionen-Batterie

Details

Veröffentlichungs-Nr.

EP4734176

Anmeldetag

6. November 2024

Veröffentlichung

19. Juni 2025

Rechtsraum

EP

Abstract

A positive electrode material, a positive electrode sheet and a lithium ion battery. The positive electrode material is obtained by mixing a lithium manganese iron phosphate material and a ternary material. During mixing, a mass ratio n of the ternary material to the lithium manganese iron phosphate material in the positive electrode material is determined according to a range of a ratio k of an actual specific capacity of the ternary material to an actual specific capacity of the lithium manganese iron phosphate material. Specifically, when k is less than or equal to 1.34, n is 1 to 9; and when k is greater than 1.34, n is 0.1 to 1, so as to avoid the following situations: due to an improper mixing ratio of the two materials, a lithium ion battery prepared using the positive electrode material is prone to problems such as low capacity retention, low cycle retention, and severe gas generation during cycling. The lithium ion battery prepared from the positive electrode material may have high energy density, high capacity retention rate, good cycle performance and good safety performance at the same time.

Anmelder

Firmen

ZHEJIANG ZEEKR INTELLIGENT TECHNOLOGY CO., LTD.
VIRIDI E-MOBILITY TECHNOLOGY (NINGBO) CO., LTD.
Zhejiang Geely Holding Group Co., Ltd.

Land

🇨🇳 China