Verfahren zur Herstellung einer Lithiumsekundärbatterie

Details

Veröffentlichungs-Nr.

EP4726855

Anmeldetag

5. September 2024

Veröffentlichung

13. März 2025

Rechtsraum

EP

Abstract

The present disclosure relates to a manufacturing method of a lithium secondary battery comprising the steps of: preparing a battery cell including a positive electrode, a negative electrode and an electrolyte, wherein the positive electrode includes a lithium-rich manganese-based oxide in which the manganese content of all metals excluding lithium is greater than 50 mol% and the ratio of the number of moles of lithium to the number of moles of all metals excluding lithium (Li/Me) is greater than 1; and charging and discharging the battery cell at least once to activate the cell, wherein in the activating step, the charging is performed in a constant current-constant voltage mode, and the charging is ended when the charging current rate reaches 0.01 C to 0.04 C, and wherein in a region where the state of charge(SOC) of the battery cell is 3 to 60%, the charging current rate is 0.8 C to 1.2 C.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea