| abstract |
[Problem] The reaction in the electrode is made uniform, and the decrease in durability is suppressed. [Solution] A method of manufacturing a non-aqueous electrolyte secondary battery, which is a method of manufacturing a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, and an electrolyte containing an electrolyte salt and a non-aqueous electrolyte capable of dissolving the electrolyte salt. A solvent, and a plurality of additives, at least one of the additives having a reduction potential higher than that of the non-aqueous solvent, and the production method includes an initial charging step including a step of reducing the battery voltage A first charging step in which the additive having the highest reduction potential among the aforementioned additives is decomposed and the aforementioned non-aqueous solvent and other additives are not reduced and decomposed by a negative electrode potential; and, at least one of the aforementioned non-aqueous solvents is A second charging step in which reduction and decomposition are carried out and the negative electrode potential reaches a battery voltage of 0.7 V or more with respect to lithium. |