| 摘要 |
PURPOSE:To prevent segregation and slipping-off of active substance from a current collector and provide a resultant battery with a high capacity and long life by furnishing a plurality of projections on the surface of the current collector made of Pb or Pb alloy. CONSTITUTION:Epoxy type adhesive agent layer 24 is applied to that surface of a plate material 20 which is situated opposite the surface where projections 23 are formed, followed by hardening process, and thereover a layer 25 of chlorinated polypropylene resin is applied. The resultant is left for drying at room temp., and a current collector 26 for pos. electrode and a one 27 for neg. electrode are accomplished in the form of a flat plate. A pos. electrode active substance 30 and neg. electrode active substance 31 are printed on each projection-equipped surface to a max. thickness of 1mm, which is subjected to maturing and chemical formation process, and an electrolyte 32 is arranged in the gap between these to active substances 30, 31. Thereby the bond of the current collector and active substance is enhanced by a plurality of projections provided on the surface of current collector, which prevents segregation and slipping-off of the active substance from the surface of current collector certainly. |
