MANUFACTURE OF PASTE TYPE ELECTRODE

摘要

PURPOSE:To prevent a paste from being drawn during pressing process and also obtain a paste type electrode of high capacity by carrying out pressure molding of the paste in such a manner that when passed between rollers for the first time the paste is pressed to predetermined final thickness by a specific roller press. CONSTITUTION:Nickel hydroxide is used as active material and nickel powder and carboxymethyl cellulose serving as a thickener are added thereto in respective predetermined amounts and pure water is further added thereto and mixed to form a paste. The paste is packed in a nickel sintered fiber base and after drying the base is passed between two upper and lower rollers once by a two- stage roller press 100mm in diameter and having the upper and lower rollers and is pressed to predetermined final thickness 0.6mm to obtain a nickel electrode. Preferably, the diameter of each roller is 100 to 300mm. Thereby the paste is prevented from being drawn during pressing and also a paste type electrode of high capacity is obtained.