| abstract |
There is provided a method for producing a non-aqueous electrolyte secondary battery, which comprises a step of constructing a battery assembly using a non-aqueous electrolyte containing a positive electrode containing N-methyl-2-pyrrolidone and an oxalato complex compound . In the above method, the battery assembly, the formula 0.000036≤B 1 / A 1 such that there is built ≤0.001048 is satisfied, where A 1 (ppm) is, N- methyl-2 per unit mass of the positive electrode coating portion P , And B 1 (mol / kg) represents the content of the oxalato complex compound per unit mass of the negative electrode active material. |