| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a nickel positive electrode active material which can attain both a conductivity as high as that of a sintered nickel positive electrode and a discharge capacity as high as that of a paste nickel positive electrode. SOLUTION: This invention provides a method for producing agglomerated crystal particles of nickel hydroxide crystals and cobalt hydroxide crystals, having a tap density of 1.50-2.50 g/cm<SP>3</SP>and an average particle diameter of 3.00-30.00 μm, which method is characterized in that when the nickel hydroxide particles are formed by the neutralization reaction of an acidic aqueous solution of nickel (2+) with an aqueous alkali solution, a cobalt hydroxide slurry is added to the reaction system. COPYRIGHT: (C)2010,JPO&INPIT
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