FABRICATION OF LITHIUM SECONDARY BATTERY

1 . A method of fabricating a lithium secondary battery, comprising:

interposing a separator between a positive electrode plate and a negative electrode plate, thus manufacturing an electrode assembly;

housing the electrode assembly in a battery case, introducing an additive-containing electrolytic solution, and then sealing the battery case;

subjecting the sealed battery case to pre-charging, and then removing gas generated by the pre-charging; and

subjecting the battery case to formation,

wherein the additive is one or more selected from among LiF 2 BC 2 O 4 , 3,9-divinyl-2,4,8,10-tetraoxaspiro[5,5]undecane, LiBC(C 2 O 4 ) 2 , poly(ethyleneglycol)borate and derivatives thereof, halogen-substituted carbonate, and vinyl silane, and

the pre-charging is conducted in a range of 50˜100% of a battery capacity.

2 . The method according to claim 1 , wherein the pre-charging is conducted under conditions of current of 0.1˜1 C and voltage of 3.6˜4.4 V.

3 . The method according to claim 1 , wherein the battery case is connected with a gas chamber through a connection path, and

the removing the gas generated by the pre-charging is conducted by exhausting the gas into the gas chamber, thermally compressing and sealing the connection path, and then eliminating the gas chamber.

4 . The method according to claim 1 , wherein the additive is used in an amount of 0.1˜10.0 wt % based on an amount of a final electrolytic solution.