| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a nonaqueous electrolyte secondary battery capable of inhibiting a decrease in battery performance and reducing manufacturing costs. SOLUTION: In a preparation step, a positive electrode is fabricated using a positive electrode mix mixed with a binder containing lithium manganate, graphite, and an acrylic polymer of polyacrylic acid or polyacrylic acid ester, and a negative electrode is fabricated using a negative mix mixed with a binder containing graphite or amorphous carbon, and an acrylic polymer of polyacrylic acid or polyacrylic acid ester. In a fabrication step, the positive and negative electrodes are wound via a separator made from polyethylene to fabricate a group of windings. In a drying step, it is heated and dried at reduced pressure. The binders containing the acrylic polymers absorb moisture in the positive and negative electrodes, with the moisture being eliminated in the drying step. |
