| 摘要 |
PURPOSE:To increase work efficiency of mixing and molding of a cathode black mix and obtain an alkaline battery having excellent heavy load discharge performance at low temperature and good storage life at high temperature by mixing porous carbon black having high electrolyte holding capacity to graphite as a conductive mass, and adding crosslinked copolymer of isobutene and maleic anhydride, which has no reducing power to manganese dioxide and absorbes large amount of an electrolyte. CONSTITUTION:Graphite and carbon black as a conductive mass are added to manganese dioxide active mass and they are stirred to make a mixture. A wetting solution prepared in such a way that for example, corsslinked polymer of isobutene and maleic anhydride is added to a potassium hydroxide electrolyte and they are mixed and stirred to make a gell like solution by swelling of polymer, is added to this mixture, then they are kneaded to make a cathode black mix. The cathode black mix is press-molded and filled to a cathode can 1 to make a cathode 2. A gelled anode mass is filled in the inside of the cathode black mix via a nonwoven fabric separator 3. A numerical 5 is a insurating gasket comprising synthetic resin, 6 is a sealing plate which also serves as an anode terminal, 7 is a current collector. The sealing plate 6 is tightly sealed by bending inward an opening 9 via the insulating gasket to construct a cylindrical alkaline battery. |
