Positive electrode active material for nonaqueous electrolyte secondary batteries and method for producing positive electrode active material for nonaqueous electrolyte secondary batteries
US-2019198872-A1 · Jun 27, 2019 · US
Positive electrode active material for lithium-ion secondary cell, and lithium-ion secondary cell
US12463213B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12463213-B2 |
| Application number | US-202017430253-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 31, 2020 |
| Priority date | Feb 19, 2019 |
| Publication date | Nov 4, 2025 |
| Grant date | Nov 4, 2025 |
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- Title
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Abstract
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A positive electrode active material for a lithium-ion secondary cell having exceptional lithium ion conductivity, the positive electrode active material being such that the absorption of moisture from the atmosphere can be suppressed. This positive electrode active material for a lithium-ion secondary cell has powder particles that include a specific composite oxide, and an organic silicon compound affixed to the surface of the powder particles, the organic functional groups of the organic silicon compound including at least one selected from the group made of C2-10 alkyl groups and C6-14 aryl groups.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A positive electrode active material for a lithium ion secondary battery comprising: powdery particles including a composite oxide represented by Formula (1) below; and an organosilicon compound adhered to surfaces of the powdery particles, wherein the organosilicon compound is at least one selected from the group consisting of n-propyltriethoxysilane, octyltriethoxysilane, and phenyltriethoxysilane, Li a Ni b X c Ba d Y e O x (1) where X is at least one element selected from the group consisting of Co and Mn, Y is at least one element selected from the group consisting of Na, K, Si, B, P and Al, a, b, c, d and e are each a real number and satisfy relationships below, and x is a real number and is not limited to a particular numerical value, a /( b+c ): 0.9 to 1.1, b /( b+c ): 0.5 to 0.95, c /( b+c ): 0.05 to 0.5, d /( b+c ): 0.0001 to 0.01, e /( b+c ): more than 0 and not more than 0.1, and b+c= 1. 2 . A lithium ion secondary battery provided with a positive electrode including the positive electrode active material for a lithium ion secondary battery according to claim 1 . 3 . The lithium ion secondary battery according to claim 2 , wherein the lithium ion secondary battery is an all-solid lithium ion secondary battery provided with a positive electrode capable of charging and discharging lithium, a negative electrode capable of charging and discharging lithium and a solid electrolyte comprising a sulfide.
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Classifications
Inorganic material · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
- H01M4/366Primary
as layered products · CPC title
inorganic · CPC title
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- What does patent US12463213B2 cover?
- A positive electrode active material for a lithium-ion secondary cell having exceptional lithium ion conductivity, the positive electrode active material being such that the absorption of moisture from the atmosphere can be suppressed. This positive electrode active material for a lithium-ion secondary cell has powder particles that include a specific composite oxide, and an organic silicon com…
- Who is the assignee on this patent?
- Jfe Steel Corp, Jfe Mineral Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/366. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 04 2025 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).