METHOD FOR MANUFACTURING SECONDARY CELL

摘要

Provided is a method for manufacturing a lithium secondary cell, whereby localized precipitation of metal contaminants in the electrodes can be minimized reliably in a shorter time period, irrespective of the type of electrode or variability thereof. This manufacturing method is a method for manufacturing a secondary cell provided with a positive electrode provided with a positive electrode active material, a negative provided with a negative electrode active material, and a non-aqueous electrolyte, wherein the method includes: a step for assembling a cell including the positive electrode, the negative electrode, and the non-aqueous electrolyte; a micro-charging step in which, in a charged state in which the positive electrode potential is at or above the oxidation potential of iron (Fe) and the negative electrode potential is at or above than the reduction potential of iron, the assembled cell is charged to 0.01%-0.5% of capacity for one hour or more, and maintained in the charged state; and a step of performing initial conditioning charging.