BATTERY CELL FOR EVALUATING LITHIUM PRECIPITATION BEHAVIOR, AND METHOD FOR MANUFACTURING SAME

A method for manufacturing a battery cell for evaluating a lithium precipitation behavior according to the present invention includes: an electrode assembly preparation step (S10) of preparing an electrode assembly to which an overhang region, where a positive electrode protrudes from a negative electrode, is introduced; a battery cell preparation step (S20) of preparing a battery cell by accommodating the electrode assembly in a first pouch, injecting an electrolyte solution thereto, and sealing the first pouch; a secondary sealing step (S30) of accommodating the battery cell in a second pouch and secondary-sealing the second pouch; a second pouch removing step (S40) of performing formation for the secondary-sealed battery cell and removing the second pouch; a gas pocket unit removing step (S50) of degassing and re-sealing the battery cell, from which the second pouch has been removed, and removing a gas pocket unit of the first pouch; and a completion step (S60) of accommodating the battery cell, from which the gas pocket unit has been removed, in a third pouch having an observation window, and sealing the third pouch.