METHOD FOR PRODUCING NICKEL-CONTAINING HYDROXIDE

• US 20190309437A1
• Filed: 06/12/2017
• Published: 10/10/2019
• Est. Priority Date: 06/14/2016
• Status: Active Grant

• Current Assignee: Sumitomo Metal Mining Company Limited
• Original Assignee: Sumitomo Metal Mining Company Limited
• Inventors: NAKAKURA, Shuhei, TSUCHIOKA, Kazuhiko, MAKI, Koichiro, SARUWATARI, Motoaki, RYOSHI, Kazuomi, NAKAO, Yoshihiko, YOSHIDA, Masafumi
• Granted Patent: US 10,781,531 B2
• Time in Patent Office: Days
• CPC Class Codes: C01G 53/00 Compounds of nickel
• CPC Class Codes: C01G 53/006 Compounds containing, besides nickel, two or more other elements, with the exception of oxygen or hydrogen nickelates C01G53/40
• CPC Class Codes: C01G 53/04 Oxides; Hydroxides
• CPC Class Codes: C01P 2002/52 containing elements as dopants
• CPC Class Codes: C01P 2004/03 obtained by SEM
• CPC Class Codes: C30B 7/14 the crystallising materials being formed by chemical reactions in the solution
• CPC Class Codes: H01M 4/32 Nickel oxide or hydroxide electrodes
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/52 of nickel, cobalt or iron
• CPC Class Codes: H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy

Abstract

A method for producing a nickel-containing hydroxide is provided that includes a nucleation step of generating nuclei of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank. In the nucleation step, a volume fraction of a highly supersaturated region in the aqueous solution where the molar concentration of the nickel-containing hydroxide dissolved in the aqueous solution is greater than or equal to 5.0 mol/m³ is less than 0.100% of the aqueous solution.

Claims

1. A method for producing a nickel-containing hydroxide, the method comprising:

a nucleation step of generating nuclei of nickel-containing hydroxide particles by neutralization crystallization in an aqueous solution accommodated in an agitation tank;

wherein in the nucleation step, a volume fraction of a highly supersaturated region in the aqueous solution where a molar concentration of the nickel-containing hydroxide dissolved in the aqueous solution is greater than or equal to 5.0 mol/m³ is less than 0.100% of the aqueous solution.

2. The method for producing a nickel-containing hydroxide according to claim 1, wherein

the nickel-containing hydroxide is produced so as to contain Ni, Co, and Al at an amount ratio of Ni:

Co;

Al=(1-x-y);

x;

y (where 0≤

x≤

0.3, 0.005≤

y≤

0.15).

3. The method for producing a nickel-containing hydroxide according to claim 1, wherein

the nickel-containing hydroxide is produced so as to contain Ni, Co, Mn, and M (where M denotes at least one additional element selected from a group consisting of Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W) at an amount ratio of Ni:

Co;

Mn;

M=x;

y;

z;

t (where x+y+z+t=1, 0.1≤

x≤

0.7, 0.1≤

y≤

0.5, 0.1≤

z≤

0.8, 0≤

t≤

0.02).