| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonaqueous electrolyte secondary battery by which gas generation can be suppressed while suppressing the increase in battery resistance.SOLUTION: A method for manufacturing a nonaqueous electrolyte secondary battery according to the invention comprises the steps of: forming an electrode body having a positive electrode including a positive-electrode active material, a negative electrode including a negative-electrode active material, and a separator disposed between the positive and negative electrodes; housing the electrode body in a battery container; and charging a nonaqueous electrolyte into the battery container, provided that the nonaqueous electrolyte includes lithium hexafluorophosphate, to which lithium difluorophosphate is added so as to have a density of 0.025-0.05 M. In this step, the adjustment is made so that the logarithm of the ratio R (R=A/B) of a content A(mol) of the added lithium difluorophosphate to a content B(mol) of moisture included in the electrode body before charging the nonaqueous electrolyte satisfies the following condition: -0.10<logR<0. |
