Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Method for producing active material composite particles
US2016268596A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016268596-A1 |
| Application number | US-201615017129-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 5, 2016 |
| Priority date | Mar 11, 2015 |
| Publication date | Sep 15, 2016 |
| Grant date | — |
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- Title
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Abstract
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An object of the present invention is to provide a method for producing active material composite particles having a dense coating layer. In the present invention, the above object is achieved by providing a method for producing an active material composite particle, the method comprising steps of: a coating step of coating a surface of an active material with a precursor solution of a Li ion conductive oxide to form a precursor layer; a heat treatment step of performing heat treatment on the precursor layer to form a coating layer comprising the Li ion conductive oxide; and a compression shearing treatment step of performing compression shearing treatment on the coating layer.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for producing an active material composite particle, the method comprising steps of: a coating step of coating a surface of an active material with a precursor solution of a Li ion conductive oxide to form a precursor layer; a heat treatment step of performing heat treatment on the precursor layer to form a coating layer comprising the Li ion conductive oxide; and a compression shearing treatment step of performing compression shearing treatment on the coating layer. 2 . The method for producing an active material composite particle according to claim 1 , wherein the precursor solution contains a metal alkoxide or a metal peroxo complex. 3 . The method for producing an active material composite particle according to claim 1 , wherein the Li ion conductive oxide is lithium niobate, and a compression shearing energy applied by the compression shearing treatment is in the range of 0.38 Wh/g to 4.86 Wh/g. 4 . The method for producing an active material composite particle according to claim 1 , wherein a main component of a solvent of the precursor solution is water, and a heat treatment temperature in the heat treatment step is 200° C. or higher.
Assignees
Inventors
Classifications
- H01M4/366Primary
as layered products · CPC title
with after-treatment of the deposited inorganic material · CPC title
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
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- What does patent US2016268596A1 cover?
- An object of the present invention is to provide a method for producing active material composite particles having a dense coating layer. In the present invention, the above object is achieved by providing a method for producing an active material composite particle, the method comprising steps of: a coating step of coating a surface of an active material with a precursor solution of a Li ion c…
- Who is the assignee on this patent?
- Toyota Motor 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 Thu Sep 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).