Negativelektrodenstromkollektor, Batteriezelle, Batterie und Elektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP4804259

Anmeldetag

23. Oktober 2024

Veröffentlichung

10. Juli 2025

Rechtsraum

EP

IPC

H01M4/66

Abstract

The present application discloses a negative electrode current collector, a battery cell, a battery, and an electric apparatus. The negative electrode current collector includes a substrate and an alloy layer located on at least one side of the substrate, where the alloy layer includes a first metal element and a second metal element, the substrate includes a third metal element, the nucleation overpotential of the elemental form of the second metal element is less than the nucleation overpotential of the elemental form of the first metal element, the nucleation overpotential for lithium metal on the elemental form of the first metal element is greater than or equal to 0.10 V, and the nucleation overpotential of the elemental form of the second metal element is less than the nucleation overpotential of the elemental form of the third metal element. The present application enables the battery to have high coulombic efficiency, high reliability, and long cycle life.

Anmelder

Firma

CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Land

🇭🇰 Hongkong

Fachgebiete