Method for charging and discharging secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsChan Soo Jun, Jong Hyun Chae, Young Jae Kim
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Abstract
Methods for charging and discharging a secondary battery are disclosed, which includes: pre-lithiating a negative electrode comprising a silicon-based active material; preparing a secondary battery including the pre-lithiated negative electrode, a positive electrode, a separator, and an electrolyte; and electrochemically charging and discharging the secondary battery with at least one cycle, wherein the electrochemical charging and discharging of the secondary battery is performed so that a difference between a charge SOC and a discharge state of charge (SOC) of the pre-lithiated negative electrode is 18% to 32%.
Claims11
A method for charging and discharging a secondary battery, the method comprising:
- pre-lithiating a negative electrode comprising a silicon-based active material to form a pre-lithiated negative electrode;
- preparing a secondary battery comprising the pre-lithiated negative electrode, a positive electrode, a separator, and an electrolyte;
- and
- electrochemically charging and discharging the secondary battery with at least one cycle,
- wherein the electrochemical charging and discharging of the secondary battery are performed so that a difference between a charge SOC and a discharge SOC of the pre-lithiated negative electrode is 18% to 32%.
Dependencies are inferred from the claim text.