| 摘要 |
PROBLEM TO BE SOLVED: To provide an alkaline battery excellent in discharge performance and liquid leakage resistance performance during overdischarge.SOLUTION: In an alkaline battery 1a, a plurality of positive electrode mixtures 3 (31-33) formed in an annular shape are inserted into a bottomed cylindrical metal-made battery can 2 serving also as a positive electrode. The positive electrode mixture contains electrolytic manganese dioxide as a positive electrode active material, the electrolytic manganese dioxide has a specific surface area measured by a BET method of 20 m/g or more 30 m/g or less, and the annular positive electrode mixtures are arranged to be laminated in a state where the positive electrode mixtures are separated from one another in a vertical direction coaxially with a cylindrical axis 10, when the extension direction of the cylindrical axis of the hollow cylindrical battery can is set to the vertical direction. |
