US 2021/0083286 A1 · LITHIUM METAL COMPOSITE OXIDE POWDER, POSITIVE ELECTRODE ACTIVE SUBSTANCE FOR LITHIUM SECONDARY BATTERY, POSITIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY

Abstract

A lithium metal composite oxide powder including: secondary particles that are aggregates of primary particles, and single particles that are present independently of the secondary particles, wherein the lithium metal composite oxide is represented by composition formula (I), and the single particles have an average crushing strength exceeding 80 MPa: Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2 (I) wherein M is one or more metal elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga, La and V, −0.1≤x≤0.2, 0≤y≤0.4, 0≤z≤0.4, and 0≤w≤0.1.

Claims7

Dependent claims

A lithium metal composite oxide powder comprising:

secondary particles that are aggregates of primary particles, and
single particles that are present independently of the secondary particles,
wherein the lithium metal composite oxide is represented by composition formula (I), and the single particles have an average crushing strength exceeding 80 MPa:
Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2 (I)
wherein M is one or more metal elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga, La and V, −0.1≤x≤0.2, 0≤y≤0.4, 0≤z≤0.4, and 0≤w≤0.1.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

16/979,415Filed 13 Mar 2019

Priority

JP 2018-04595513 Mar 2018

Published

18 Mar 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification26 codes

H01M 4/525
Of nickel, cobalt or iron: of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g.…
C01G 53/42
Complex oxides containing nickel and at least one other metal element: containing alkali metals, e.g. LiNiO2
C01G 53/504
Containing lithium and cobalt: with the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.5,…
C01G 53/506
With the molar ratio of nickel with respect to all the metals other than alkali metals higher than or equal to 0.5, e.g. LiO2 with x ≥ 0.5: with…

Lithium metal composite oxide powder, positive electrode active substance for lithium secondary battery, positive electrode, and lithium secondary battery

Life of this patent

Lithium metal composite oxide powder, positive electrode active substance for lithium secondary battery, positive electrode, and lithium secondary battery

Life of this patent

Abstract

Claims7