POLPLATTE FÜR ALKALISCHE SPEICHERBATTERIE UND HERSTELLUNG DIESER POLPLATTE UND ALKALISCHE SPEICHERBATTERIE

摘要

A battery fabricated by winding an electrode formed by filling an active material into a substrate that uses a beltlike metal porous body having three-dimensionally connected space has poor flexibility and short circuits tend to occur. In the present invention, an in-groove active material layer is formed inside grooves by forming grooves on an active material-filled substrate filled with an active material and thereafter pressing them smooth. With this configuration, cracks are urged to occur preferentially on the bottom of the grooves while at the same time they are closed by pressing them with the in-groove active material layer, thereby preventing bulging and projecting of the cracks and flowing out of the active material. With this configuration, a higher capacity and improvement of reliability of a battery can be achieved.