| 摘要 |
PURPOSE:To improve the cell property extensively, by adjusting the pH of a manganese dioxide used for a positive electrode active substance of an alkaline manganic cell between 2.5 and 4.0. CONSTITUTION:By adjusting the pH of the manganese dioxide in a specific range, in a meutralization treatment which is the latter process of the manganese dioxide manufacture process, the discharge performance, especially that at a low temperature area such as -20 deg. is improved remarkably. The manganese dioxide has an optimum pH value to improve the cell property, and the range is pH 2.5 to 4.0. The manganese dioxide used for this purpose has no special designation, and an electrolyzed maganese dioxide, a chemical manganese dioxide, and the like, for example, can be used. |
