| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonaqueous electrolyte secondary battery that can more properly exhibit an effect of difluorophosphate even when difluorophosphate is used in combination with other additives.SOLUTION: A manufacturing method provided by the present invention includes: a first liquid injection step (S10) of injecting a nonaqueous electrolyte in which a predetermined additive is added and difluorophosphate is not added, in a battery case; a first charge/discharge step (S12) of, after the first liquid injection step, performing initial charge/discharge into a battery; a second liquid injection step (S14) of, after the first charge/discharge step, injecting a nonaqueous electrolyte in which difluorophosphate is added and a predetermined additive is not added, into the battery case; and a second charge/discharge step (S16) of, after the second liquid injection step, performing second charge/discharge to the battery. |
