| 摘要 |
PROBLEM TO BE SOLVED: To suppress the uneven distribution of CoOOH to uniformly distribute in a nickel positive electrode, and enhance discharge characteristics being subject to the influence of an activation state of a battery by containing amorphous CoOOH in the nickel positive electrode in an alkaline battery with the nickel positive electrode. SOLUTION: In an activated alkaline battery, the active material surface of a nickel positive electrode is uniformly covered with fine particles of amorphous CoOOH, fine conducting networks are formed, and high discharge characteristics are obtained. Smaller particle diameter of Co and CoO which are starting material is preferable from the standpoint of solubility to an electrolyte, For example, mean particle diameter of Co is preferable to be 10 micron or less, and that of CoO is preferable to be 8 micron or less. If the mean particle diameters exceed these values, dissolution to the electrolyte is made difficult, at least one of Co and CoO remains in the electrolyte, and sometimes it has bad effect on the discharge characteristics. |
