Method For Manufacturing Lithium Secondary Battery

Abstract: The present invention relates to a method for manufacturing a lithium secondary battery, comprising the steps of: preparing a battery cell comprising a cathode, an anode and an electrolyte, the cathode containing an overlithiated manganese-based oxide in which the amount of manganese among all the metals, excluding lithium, exceeds 50 mol%, and the ratio (Li/Me) of the mole of lithium to the mole of all the metals, excluding lithium, exceeds 1; and charging and discharging the battery cell at least once, thereby activating same, wherein when the battery cell is charged to 2.0-4.3 V, the ratio (N/P ratio) of the discharge capacity per unit area of the anode to the discharge capacity per unit area of the cathode is 1.05-1.15, and, in the activation step, charging is carried out up to an SOC of 60-65.

Patent Information

Applicants

Inventors

Specification

Documents

Application Documents