Composite cathode active material, cathode and lithium battery comprising the same, and preparation method thereof
US-2015171423-A1 · Jun 18, 2015 · US
Positive active material for rechargeable lithiuim battery and rechargeable lithium battery including same
US10454099B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10454099-B2 |
| Application number | US-201715613716-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 5, 2017 |
| Priority date | Jun 13, 2016 |
| Publication date | Oct 22, 2019 |
| Grant date | Oct 22, 2019 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The positive active material includes a core including a lithium intercalation compound and a crystalline coating compound on a surface of the core and including a crystalline aluminum hydroxide, a crystalline aluminum oxyhydroxide, or a combination thereof.
First claim
Opening claim text (preview).
What is claimed is: 1. A positive active material for a rechargeable lithium battery, comprising: a core comprising a lithium intercalation compound; and a crystalline coating compound on a surface of the core and comprising a crystalline aluminum hydroxide, a crystalline aluminum oxyhydroxide, or a combination thereof wherein the crystalline coating compound is present in an island form on the surface of the core. 2. The positive active material of claim 1 , wherein an average particle diameter (D50) of the coating compound is in a range of about 200 nm to about 1000 nm. 3. The positive active material of claim 1 , wherein a content of the coating compound is in a range of about 0.05 mol % to about 2 mol % based on 100 mol % of the core. 4. The positive active material of claim 1 , wherein the positive active material further comprises a conductive material on the surface of the core. 5. The positive active material of claim 1 , wherein the coating compound has a spherical shape or a sheet shape. 6. A rechargeable lithium battery, comprising: a positive electrode comprising the positive active material of claim 1 ; a negative electrode comprising a negative active material; and an electrolyte.
Assignees
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Classifications
for non-aqueous cells (H01M4/485 takes precedence) · CPC title
- H01M4/525Primary
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
- H01M4/364Primary
as mixtures · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
Carbon or graphite · CPC title
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Frequently asked questions
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- What does patent US10454099B2 cover?
- A positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The positive active material includes a core including a lithium intercalation compound and a crystalline coating compound on a surface of the core and including a crystalline aluminum hydroxide, a crystalline aluminum oxyhydroxide, or a combination thereof.
- Who is the assignee on this patent?
- Samsung Sdi Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 22 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).