| 摘要 |
PROBLEM TO BE SOLVED: To provide an alkali storage battery the cycle life characteristics of which can be enhanced, by minimizing local deterioration of a battery reaction material to be involved in the battery reaction within the battery.SOLUTION: An alkali storage battery includes an outer can 10, and an electrode group 22 housed in the outer can 10 together with an alkaline electrolyte. The electrode group 22 is formed by winding a positive electrode 24 and a negative electrode 26 while sandwiching a separator 28. The positive electrode 24 includes a nickel form, and a positive electrode active material held by the nickel form. The nickel form includes a first outer peripheral region located on the outer periphery of the electrode group 22, and a region of higher weight than the first outer peripheral region located on the inside of the outer periphery of the electrode group 22. |
