METHOD AND DEVICE FOR PRODUCING A POSITIVE ELECTRODE IN BAND FORM FOR GALVANIC CELLS

摘要

To produce positive strip electrodes for primary and secondary cells in a dry process, two paste strips (6) are simultaneously rolled from powdered active material, inter alia MnO2, FeS2, CuO, alpha -Cu2V2O7 and LixMnOy, and then fed from two sides to the nip of a cylinder mill (14) in which they are rolled onto both sides of a grid-type carrier strip which is fed into the cylinder mill between them from a reel (12). After excess paste has been skimmed off, the finished electrode strip has a thickness of less than 0.45 mm and a porosity of more than 24%. Because of its large active surface, the electrode strip is preferably used in wound cells in combination with Li or H2 electrodes. ……