| 摘要 |
PROBLEM TO BE SOLVED: To develop the manufacturing method of a nickel hydroxide active material so that cobalt can be simply added and contained without forming a Ni-Co compound, and provide the nickel hydroxide active material further improved in its utilization factor. SOLUTION: Under agitation conditions, a nickel salt aqueous solution, an ammonia ion supplier, and an alkali hydroxide aqueous solution are added to an aqueous solution previously suspending granular metal cobalt. A particle of metal cobalt is used as a nucleus, nickel hydroxide is crystallized and developed on the surface of the particle. Thereby, a nickel hydroxide active material is provided containing the granular metal cobalt being localized close to the medial portion in the inside of a developed particle of nickel hydroxide. |
