| 摘要 |
PURPOSE: To establish a method for manufacturing a chemical battery which can perform a uniform and effective drying process for a sheet-form electrode plate with a good thermal efficiency, which prevents cracks in the coating film likely to be initiated during the drying process, and which involves less variation in manufacture in the discharging capacity owing to the uniform drying. CONSTITUTION: 87 parts by wt. LiCoO2 as positive electrode active material is mixed with 9 parts by wt. graphite as an electroconductivity generating agent, and further thereto 3 parts by wt. polytetrafluoroethylene and 1 part by wt. sodium polyacrylate are added as binder. Thereto water is added as a solvent and the resultant substance is mixed together, kneaded, and dispersed using a universal mixer, and a slurry of a coating liquid as a positive electrode material is produced. As an electroconductive support an aluminum foil of 30μm thick is used, and application of the coating is performed to each surface using an extrusion coater at a coating speed of 3m/min. A drying chamber consists of four compartments, each of which performs drying with a wind on the slit system with a rate of opening of 8%, provided that the first and second compartments perform the drying under the conditions with the temp. 60 deg.C and slit wind speed 3m/sec while the third and fourth compartments with the temp. 60 deg.C and slit wind speed 6m/sec. |
