| 摘要 |
An alkali storage cell characterized in high nickel active material utilization, little decrease of cycle characteristics due to electrode plumping, and high capacity. In order to provide such an alkali storage cell, active material is created in the following way: a first covering layer mainly composed of a group II element compound is precipitated on surface of nickel hydroxide particles which are dispersed as dispersion in dispersion medium by adding a solution in which a group II element is dissolved and an alkali solution, adjusting amount of each solution so as to maintain pH of the dispersion medium at 9 to 12. An alkali storage cell having high capacity and long life by suppressing diffusion of cobalt on the surface of nickel hydroxide particles into the nickel hydroxide particles along with charge and discharge cycles. In order to provide such a storage cell, a second covering layer mainly composed of cobalt compound is formed on the surface of the first covering layer formed on the surface of nickel hydroxide particles. |
