| 摘要 |
PURPOSE:To prevent separation of positive active material and increase high temperature storage performance by mixing positive active material powder, fine conductive powder, and metal alcoholate, and spreading the viscous mixture obtained on a positive current collector, then applying heat-treatment to them. CONSTITUTION:100pts.wt. mixture of 20pts.wt. metal alcoholate such as Si(OC2 H5)4 and 80pts.wt. alcohol is mixed with 100pts.wt. mixture of 100pts.wt. positive active material powder and 3-15pts.wt. fine conductive powder such as carbon black to form viscous mixture. The viscous mixture is spreaded on a positive current collector such as SUS plate so as to have a thickness of about 0.3mm, and dried in a vacuum condition, then heated at 150 deg.C for 1hr, and heated in a vacuum condition at 100 deg.C for 6hr. The positive active material is strongly bonded to the current collector and separation of the active material is prevented. Thereby, productivity of the electrode having good high temperature storage performance is increased. |
