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Title:
NICKEL-CONTAINING HYDROXIDE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/117027
Kind Code:
A1
Abstract:
Provided are: a nickel-containing hydroxide that has a small particle size, a narrow particle size distribution, and high sphericity; and a production method therefor. This nickel-containing hydroxide serves as a raw material for a positive electrode active substance for non-aqueous electrolyte secondary batteries and has a weight-average particle diameter of 1.00–3.00 µm, a spread of particle size distribution, expressed by the index (d90–d10)/weight-average particle diameter, of no more than 0.50, and a circularity of at least 0.95. This production method for the nickel-containing hydroxide is characterized by a region in which the acceleration of slurry including nickel-containing hydroxide particles reaches at least 900 m/s2 being present in a neutralization crystallization process in which a metal salt-containing aqueous solution, an alkali metal hydroxide, and a complexing agent are supplied and reacted, while stirring a reaction solution, and nickel-containing hydroxide particles are obtained.

Inventors:
RYOSHI KAZUOMI (JP)
SARUWATARI MOTOAKI (JP)
NAKAO YOSHIHIKO (JP)
Application Number:
PCT/JP2018/045045
Publication Date:
June 20, 2019
Filing Date:
December 07, 2018
Export Citation:
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Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
H01M4/525; C01G51/00; H01M4/505
Domestic Patent References:
WO2017057311A12017-04-06
WO2013125703A12013-08-29
WO2017217370A12017-12-21
Foreign References:
JP2009515799A2009-04-16
Attorney, Agent or Firm:
YAMAUCHI PATENT ATTORNEYS (JP)
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