| 摘要 |
PROBLEM TO BE SOLVED: To provide: a method for manufacturing a lithium ion secondary battery, by which the predoping of lithium can be performed on an entire precursor rapidly and uniformly; and a precursor of a lithium ion secondary battery.SOLUTION: A method for manufacturing a lithium ion secondary battery comprises: an electrode pair-forming step for forming, as one unit, each electrode pair A arranged by laminating a negative electrode 2 including a negative electrode current collector with through-holes formed therein, and a negative electrode active material layer formed on the negative electrode current collector, a separator 3, and a positive electrode 4 including a positive electrode current collector with through-holes formed therein, and a positive electrode active material layer formed on the positive electrode current collector in this order; a unit lamination step for laminating three or more units of the electrode pairs A, A with a separator interposed between the electrode pairs; a precursor forming step for forming a precursor B of the lithium ion secondary battery 1, which is arranged by laminating a lithium donor 5 on each of ends of the electrode pairs A at two or more locations, including at least on location between the electrode pairs A, A in a laminating direction; and a predoping step for performing the predoping with lithium with an electrolyte disposed between the negative electrode 2 and the positive electrode 4.SELECTED DRAWING: Figure 2 |
