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
Coated active material and coated active material production method
US2025260003A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025260003-A1 |
| Application number | US-202519042238-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 31, 2025 |
| Priority date | Feb 14, 2024 |
| Publication date | Aug 14, 2025 |
| Grant date | — |
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- Title
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Abstract
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The coated active material includes an electrode active material and a coating layer covering the electrode active material, wherein the coating layer includes an oxide solid electrolyte containing a Li element, a P element, and an O element, and a particle size (D50) of the coated active material is 5.5 μm or less.
First claim
Opening claim text (preview).
What is claimed is: 1 . A coated active material comprising an electrode active material and a coating layer that coats the electrode active material, wherein: the coating layer contains an oxide solid electrolyte containing an Li element, a P element, and an O element; and a particle size (D 50 ) of the coated active material is 5.5 μm or less. 2 . The coated active material according to claim 1 , wherein the particle size (D 50 ) is 1.0 μm or more. 3 . The coated active material according to claim 1 , wherein the oxide solid electrolyte further contains a B element or an La element. 4 . A coated active material production method of producing the coated active material according to claim 1 , the coated active material production method comprising: preparing a slurry containing the electrode active material, the oxide solid electrolyte, and a solvent for dissolving the oxide solid electrolyte; and forming the coating layer by a spray drying method of jetting the slurry with atomized air to be dried, wherein a gas-liquid ratio in the spray drying method is 5.0×10 −3 or less. 5 . The coated active material production method according to claim 4 , wherein the atomized air has a flow rate of 60 L/min or more.
Assignees
Inventors
Classifications
Positive electrodes · CPC title
of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
Solid materials · CPC title
involving spraying · CPC title
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Frequently asked questions
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- What does patent US2025260003A1 cover?
- The coated active material includes an electrode active material and a coating layer covering the electrode active material, wherein the coating layer includes an oxide solid electrolyte containing a Li element, a P element, and an O element, and a particle size (D50) of the coated active material is 5.5 μm or less.
- 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 Aug 14 2025 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).