| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a nonaqueous electrolyte secondary battery in which precipitation of a material derived from a charge carrier is suppressed, by preventing variation in the coating amount due to concentration of sodium component, thereby forming a coat of a preferable mode on the surface of a negative electrode active material.SOLUTION: The manufacturing method of a nonaqueous electrolyte secondary battery includes a step (S10) for preparing an electrode body having a positive electrode containing a positive electrode active material and a negative electrode containing a negative electrode active material, the electrode body containing a sodium (Na) component as an inevitable impurities, a step (S20) for housing the electrode body in a battery case, a first injection step (S30) for injecting a nonaqueous electrolyte not containing an oxalate complex compound containing boron (B) as a constituent element into the battery case, and a second injection step (S50) for injecting a nonaqueous electrolyte containing the oxalate complex compound into the battery case following the first injection step. |
