| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a nonaqueous electrolyte secondary battery, by which the viscosity of a negative electrode paste can be easily adjusted even when CMC having a large molecular weight is used in order to reduce the value of resistance of a battery, and thereby capable of providing a nonaqueous electrolyte secondary battery having the value of resistance lower than that of conventional one.SOLUTION: In a lithium ion secondary battery 1 containing CMC 3 in the mixture layer of a negative electrode 9, the concentration of Fe contained in a graphite 2 that is a raw material active material constituting the negative electrode 9 is 32 ppm or more and 82 ppm or less, and the oil absorption volume of linseed oil in 70% torque of the graphite 2 is 50 ml/100 g or more and 62 ml/100 g or less. |
