| 摘要 |
PROBLEM TO BE SOLVED: To obtain a non-sintered nickel pole which developes a high coefficient of use of active material in the case of being charged under a high temperature atmosphere by comprising an active material powder comprised of a complex powder consisting of an covered inner consisting of a base body particle containing nickel hydroxide and yttrium covering the base body particle or the like, and a covered outer layer consisting of cobalt covering the covered inner layer or a compound thereof. SOLUTION: A base body particle contains a single component particle consisting of only nickel hydroxide and a particle in which an element such as cobalt is solidified and solved in the nickel hydroxide. A covered inner layer consists of yttrium, scandium or lanthanoid, or a compound thereof, preferably hydroxide, oxide, carbonic acid salt, or fluoride. A ratio of the element in the covered inner layer is 0.05 to 5 wt.% to the nickel hydroxide in a base material particle. A cobalt compound of the covered outer layer include cobalt monoxide or the like. A rate of the covered outer layer is 3 to 15 wt.% to a complex particle. |
