Method for manufacturing cathode electrode materials
US-2016156020-A1 · Jun 2, 2016 · US
Positive-electrode material for lithium ion secondary battery, method for producing the same, and lithium ion secondary battery
US10749175B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10749175-B2 |
| Application number | US-201916280421-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 20, 2019 |
| Priority date | Nov 13, 2015 |
| Publication date | Aug 18, 2020 |
| Grant date | Aug 18, 2020 |
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Abstract
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A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li 1+a Ni b Mn c Co d Ti e M f O 2+α , and has an atomic ratio Ti 3+ /Ti 4+ between Ti 3+ and Ti 4+ , as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and α are numbers satisfying −0.1≤a≤0.2, 0.7<b≤0.9, 0≤c<0.3, 0≤d<0.3, 0<e≤0.25, 0≤f<0.3, b+c+d+e+f=1, and −0.2≤α≤0.2.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a positive-electrode material for a lithium ion secondary battery, comprising: a mixing step of mixing a lithium-containing compound with compounds each containing a metal element other than Li in the following Formula (1), thereby obtaining a mixture; and firing the mixture under an oxidizing atmosphere to obtain a lithium complex compound, the lithium complex compound being represented by the following Formula (1) and having an atomic ratio Ti 3+ /Ti 4+ between Ti 3+ and Ti 4+ , as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20, wherein the compounds each containing a metal other than Li in the mixing step comprise an organic titanium compound as a Ti-containing compound: Li 1+a Ni b Mn c Co d Ti e M f O 2+α (1), where in the Formula (1), M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and α are numbers satisfying −0.1≤a≤0.2, 0.7<b≤0.9, 0≤c<0.3, 0≤d<0.3, 0<e≤0.25, 0≤f<0.3, b+c+d+e+f=1, and −0.2≤α≤0.2. 2. The method for producing a positive-electrode material for a lithium ion secondary battery according to claim 1 , wherein the organic titanium compound is a titanium-containing chelating agent. 3. A method for producing a positive-electrode material for a lithium ion secondary battery, comprising: a mixing step of mixing a lithium-containing compound with compounds each containing a metal element other than Li in the following Formula (1), thereby obtaining a mixture; and firing the mixture under an oxidizing atmosphere to obtain a lithium complex compound, the lithium complex compound being represented by the following Formula (1) and having an atomic ratio Ti 3+ /Ti 4+ between Ti 3+ and Ti 4+ , as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20, wherein the compounds each containing a metal other than Li in the mixing step comprise titanium oxide as a Ti-containing compound: Li 1+a Ni b Mn c Co d Ti e M f O 2+α (1), where in the Formula (1), M is at least one element selected from the group consisting of Mg, Al, Zr, Mo, and Nb, and a, b, c, d, e, f, and α are numbers satisfying −0.1≤a≤0.2, 0.7<b≤0.9, 0≤c<0.3, 0≤d<0.3, 0<e≤0.25, 0≤f<0.3, b+c+d+e+f=1, and −0.2≤α≤0.2.
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Surface area · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
Agglomerated particles · CPC title
by d-values or two theta-values, e.g. as X-ray diagram · CPC title
containing elements as dopants · CPC title
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- What does patent US10749175B2 cover?
- A positive-electrode material for a lithium ion secondary battery contains a lithium complex compound that is represented by the formula: Li 1+a Ni b Mn c Co d Ti e M f O 2+α , and has an atomic ratio Ti 3+ /Ti 4+ between Ti 3+ and Ti 4+ , as determined through X-ray photoelectron spectroscopy, of greater than or equal to 1.5 and less than or equal to 20. In the formula, M is at least one ele…
- Who is the assignee on this patent?
- Hitachi Metals Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01G53/44. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 18 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).