Verfahren zur Herstellung einer Lithiumsekundärbatterie

Details

Veröffentlichungs-Nr.

EP4726856

Anmeldetag

28. August 2024

Veröffentlichung

27. März 2025

Rechtsraum

EP

Abstract

The present disclosure relates to a manufacturing method of a lithium secondary battery comprising: a step (S1) of manufacturing a preliminary cell which comprises a positive electrode containing a positive electrode active material, a negative electrode, a separator and an electrolyte; and a step (S2) of charging the preliminary cell to a charging cut-off voltage and discharging the preliminary cell to the discharging cut-off voltage to activate the preliminary cell, wherein the positive electrode active material includes a lithium-rich manganese-based oxide containing 50 mol% or more of manganese(Mn) among all metals excluding lithium, and having a molar ratio of lithium to all metals excluding lithium (Li/Me) exceeding 1, and wherein the charging cut-off voltage is more than 4.3V, and the discharging cut-off voltage is 2.6V or more.

Anmelder

Firma

LG Energy Solution, Ltd.

Land

🇰🇷 Südkorea