| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an alkaline storage cell having a good charge accepting property even in an over discharge condition by discharging for a long time with a very small amount of current. <P>SOLUTION: The alkaline storage cell is equipped with a nickel positive electrode, a negative electrode, a separator isolating them, and an alkaline electrolyte. The nickel positive electrode is equipped with a positive electrode active material mainly composed of nickel hydroxide, higher degree nickel hydroxide, or a mixture of them, and also, concentration of silicon included in the positive electrode active material is controlled to be not more than 200 ppm to a mass of the positive electrode active material. Like this, when the silicon concentration is controlled being to be not more than 200 ppm to a mass of the positive electrode active material, an alkaline storage cell having a good charge accepting property after over discharging can be obtained. <P>COPYRIGHT: (C)2004,JPO |
