Nickel-containing composite hydroxide and production process thereof

Patent metadata

Field	Value
Publication number	US-11909039-B2
Application number	US-202016749208-A
Country	US
Kind code	B2
Filing date	Jan 22, 2020
Priority date	Oct 30, 2014
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

The nickel-containing composite hydroxide disclosed herein contain secondary particles, which are formed from an aggregation of numerous primary particles, which have an average particle size of the primary particles is 0.01 μm to 0.40 μm. These secondary particles have a spherical or ellipsoidal shape, an average particle size of 20 μm to 50 μm, and a BET value of 12 m2/g to 50 m2/g after being roasted in air for 2 hours at 800° C.

First claim

What is claimed is:

1. A nickel-containing composite hydroxide that is expressed by
the general formula: Ni 1-x-y Co x Al y M t (OH) 2+α , where, 0≤x≤0.20, 0≤y≤0.15, 0≤t≤0.10, 0≤α≤0.50, and M is one or more kind of element selected from among Mg, Ca, Ba, Nb, Mo, V, Ti, Zr and Y, or
the general formula: Ni 1-x-z Co x Mn z M t (OH) 2+α , where 0≤x≤0.50, 0≤z≤0.50, x+z≤0.70, 0≤t≤0.10, 0≤α≤0.50, and M is one or more kind of element selected from among Mg, Ca, Ba, Nb, Mo, V, Ti, Zr and Y,
the nickel-containing composite hydroxide comprising secondary particles, each of the secondary particles being formed from an aggregation of a plurality of primary particles,
wherein the shape of each of the secondary particles is spherical or ellipsoidal,
wherein the average particle size of the secondary particles is 20 μm to 50 μm, and the average particle size of the primary particles is 0.01 μm to 0.40 μm, and the BET value after roasting the nickel-containing composite hydroxide in air for 2 hours at 800° C. is 12 m 2 /g to 50 m 2 /g.

2. The nickel-containing composite hydroxide according to claim 1 , wherein the average particle size of the secondary particles is 25 μm to 50 μm.

Assignees

• Sumitomo Metal Mining Co

Inventors

• Ryoshi Kazuomi
• Mori Kensaku
• Kase Katsuya
• Kamata Yasutaka

Classifications

• C01G53/82 Primary

  Compounds containing nickel, with or without oxygen or hydrogen, and containing two or more other elements · CPC title

• H01M4/525 Primary

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title

• C01G53/006

  Chemistry & Metallurgy · mapped topic

• C01G53/42

  containing alkali metals, e.g. LiNiO2 · CPC title

• C01G53/50

  of the type (MnO2)n-, e.g. Li(NixMn1-x)O2 or Li(MyNixMn1-x-y)O2 · CPC title