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
Composite particle, positive electrode, and all-solid-state battery
US2024243263A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024243263-A1 |
| Application number | US-202418406887-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 8, 2024 |
| Priority date | Jan 11, 2023 |
| Publication date | Jul 18, 2024 |
| Grant date | — |
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Abstract
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A composite particle comprising: a positive electrode active material particle; and a coating film covering at least part of a surface of the positive electrode active material particle, wherein the coating film includes a first layer covering at least part of the surface of the positive electrode active material particle and a second layer covering at least part of a surface of the first layer, the first layer includes an alkaline oxide including Li and M, the M is at least one of niobium and carbon, and the second layer includes a phosphorus compound.
First claim
Opening claim text (preview).
What is claimed is: 1 . A composite particle comprising: a positive electrode active material particle; and a coating film covering at least part of a surface of the positive electrode active material particle, wherein the coating film includes a first layer covering at least part of the surface of the positive electrode active material particle and a second layer covering at least part of a surface of the first layer, the first layer includes an alkaline oxide including Li and M, the M is at least one of niobium and carbon, and the second layer includes a phosphorus compound. 2 . The composite particle according to claim 1 , wherein the alkaline oxide is lithium niobate or lithium carbonate. 3 . The composite particle according to claim 1 , wherein the phosphorus compound is a phosphoric acid compound. 4 . A positive electrode comprising the composite particle according to claim 1 and a sulfide solid electrolyte. 5 . An all-solid-state battery comprising the positive electrode according to claim 4 , a negative electrode, and a separator.
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Classifications
Li-accumulators · CPC title
Construction or manufacture · CPC title
Solid materials · CPC title
Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy · CPC title
Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
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- What does patent US2024243263A1 cover?
- A composite particle comprising: a positive electrode active material particle; and a coating film covering at least part of a surface of the positive electrode active material particle, wherein the coating film includes a first layer covering at least part of the surface of the positive electrode active material particle and a second layer covering at least part of a surface of the first layer…
- 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 Jul 18 2024 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).