Title:
METHOD FOR PRODUCING COMPOSITE HYDROXIDE, AND COMPOSITE HYDROXIDE
Document Type and Number:
WIPO Patent Application WO/2021/201270
Kind Code:
A1
Abstract:
The present invention provides a method for producing a composite hydroxide that contains nickel (Ni) and cobalt (Co), said method being capable of adequately controlling the BET specific surface area without deteriorating the tap density, while being also capable of reducing the production cost. A method for producing a composite hydroxide that contains at least nickel (Ni) and cobalt (Co), wherein: a first metal-containing aqueous solution that contains A mol% of nickel (Ni) and B mol% of cobalt (Co), a second metal-containing aqueous solution that contains C mol% of nickel (Ni) and D mol% of cobalt (Co) (provided that A > C, B < D, (A + B) = 100 and (C + D) = 100), an aqueous alkali metal solution, and an aqueous solution containing an ammonium ion donor are separately supplied into a reaction tank; and the solution within the reaction tank is maintained so that the pH value thereof is within the range of from 10.0 to 13.0 as determined at a reference solution temperature of 25˚C and the ammonium ion concentration thereof is within the range of from 1.0 g/L to 10.0 g/L.
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Inventors:
KATAGIRI KAZUKI (JP)
IIDA YASUTAKA (JP)
TAKASHIMA MASAHIRO (JP)
IIDA YASUTAKA (JP)
TAKASHIMA MASAHIRO (JP)
Application Number:
PCT/JP2021/014290
Publication Date:
October 07, 2021
Filing Date:
April 02, 2021
Export Citation:
Assignee:
TANAKA CHEMICAL CORP (JP)
International Classes:
C01G53/00; H01M4/505; H01M4/525
Foreign References:
| KR20170108184A | 2017-09-27 | |||
| JP2017210395A | 2017-11-30 | |||
| CN1994899A | 2007-07-11 | |||
| JPH09306487A | 1997-11-28 | |||
| CN110224123A | 2019-09-10 | |||
| JP2019153567A | 2019-09-12 | |||
| JP2018523895A | 2018-08-23 | |||
| JP2006089364A | 2006-04-06 |
Other References:
See also references of EP 4129925A4
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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