Metal composite compound

Patent metadata

Field	Value
Publication number	US-2026078016-A1
Application number	US-202519320307-A
Country	US
Kind code	A1
Filing date	Sep 5, 2025
Priority date	Sep 19, 2024
Publication date	Mar 19, 2026
Grant date	—

Abstract

A metal composite compound includes at least Ni. In a scatter plot obtained by measuring a powder of the metal composite compound using a scanning electron microscope-energy dispersive X-ray spectroscopy, with a horizontal axis representing a projected area circle equivalent diameter (μm) of particles of the metal composite compound and a vertical axis representing an Ni content ratio (mol %) of the particles of the metal composite compound, a slope S of an approximate straight line calculated by a least squares method is −0.2 or more and 0.2 or less. When a particle diameter at which a cumulative volume ratio from a small particle side in a volume-based particle size distribution reaches 10% is defined as D10 (μm), a standard deviation X of the Ni content ratio (mol %) in particles having a projected area circle equivalent diameter of the D10 (μm) or less is 2.0 mol % or less.

First claim

What is claimed is:

1 . A metal composite compound comprising at least Ni,
wherein in a scatter plot obtained by measuring a powder of said metal composite compound using a scanning electron microscope-energy dispersive X-ray spectroscopy, with a horizontal axis representing a projected area circle equivalent diameter (μm) of particles of said metal composite compound and a vertical axis representing an Ni content ratio (mol %) of the particles of said metal composite compound, a slope S of an approximate straight line calculated by a least squares method is −0.2 or more and 0.2 or less; and when a particle diameter at which a cumulative volume ratio from a small particle side in a volume-based particle size distribution reaches 10% is defined as D 10 (μm), a standard deviation X of the Ni content ratio (mol %) in particles having a projected area circle equivalent diameter of said D 10 (μm) or less is 2.0 mol % or less.

2 . The metal composite compound according to claim 1 ,
wherein when a particle diameter at which the cumulative volume ratio from the small particle side in said particle size distribution reaches 50% is defined as D 50 (μm), a ratio of said X and a standard deviation Y of the Ni content ratio (mol %) in particles having a projected area circle equivalent diameter of said D 50 (μm) or more is 7.0 or less.

3 . The metal composite compound according to claim 1 ,
wherein D 50 (μm), which is a particle diameter at which the cumulative volume ratio from the small particle side in said particle size distribution reaches 50%, is 4 μm or more and 20 μm or less; a ratio (D 10 /D 50 ) of said D 10 (μm) with respect to said D 50 (μm) is 0.3 or more and 0.8 or less; and when a particle diameter at which the cumulative volume ratio from the small particle side in the volume-based cumulative particle size distribution reaches 90% is defined as D 90 (μm), a ratio (D 90 /D 50 ) of said D 90 (μm) with respect to said D 50 (μm) is 1.4 or more and 1.8 or less.

4 . The metal composite compound according to claim 1 , which is represented by the following formula (I):

(wherein 0<x≤0.8, 0≤y≤0.2, 0<x+y<1, 0≤z≤3, −0.5≤α≤2, and α−z<2; M1 is one or more elements selected from the group consisting of Co, Mn, and Al; and M2 is one or more elements selected from the group consisting of Fe, Cu, Ti, Mg, Zn, Sn, Zr, Nb, Ga, W, Mo, B, and Si.)

5 . The metal composite compound according to claim 1 , wherein said S does not include 0.

Assignees

• Tanaka Chemical Corp

Inventors

• Nakaya ayaka
• Kuroda Tomoya

Classifications

• C01G53/40

  Complex oxides containing nickel and at least one other metal element · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• C01G53/42

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

• H01M4/525

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

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title