| 摘要 |
PROBLEM TO BE SOLVED: To minimize the occurrence of a welding failure by the residual nonconductive active material by compressing a prescribed position of a current collector to provide a tab mounting position, and continuously patting the tab mounting position after filling an active material paste. SOLUTION: A nickel porous sheet is pressed in the thickness direction by use of a press machine to form a recessed part 2, and a tab 2a is mounted thereon. A paste-like active material mix is applied onto the sheet followed by drying, and the whole sheet is rolled to regulate the thickness, and then cut into a prescribed dimension to form a positive electrode plate precursor 1a. The tab 2b of the precursor 1a is subjected to nickel hydroxide removing work. This removing work is performed by continuously patting the tab mounting position by an impact imparting means 4. As the imparting means 4, a member formed of a bundle of a plurality of needles 4a is used, and the nickel hydroxide exposed to the surface of the mounting position 2a is scraped to the needle tips, and the nickel hydroxide is peeled off from the communicating holes within the mounting position 2a. |
