Protection interfaces for li-ion battery anodes
US-2020395618-A1 · Dec 17, 2020 · US
Coated anode active material and all solid state battery
US12456727B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12456727-B2 |
| Application number | US-202217902291-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 2, 2022 |
| Priority date | Sep 13, 2021 |
| Publication date | Oct 28, 2025 |
| Grant date | Oct 28, 2025 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
A main object of the present disclosure is to provide a coated anode active material capable of preventing the reaction resistance from increasing during high cycles. The present disclosure achieves the object by providing a coated anode active material including: a Si-based active material; and a coating layer that coats at least a part of a surface of the Si-based active material and includes a lithium oxide; wherein a silicon oxide layer is formed between the Si-based active material and the coating layer.
First claim
Opening claim text (preview).
What is claimed is: 1. A coated anode active material comprising: a Si-based active material; and a coating layer that coats at least a part of a surface of the Si-based active material and includes a lithium titanate; wherein an amorphous silicon oxide layer is formed between the Si-based active material and the coating layer, and an average particle size (D 50 ) of the Si-based active material is 1 μm or more. 2. The coated anode active material according to claim 1 , wherein the lithium titanate is Li 4 Ti 5 O 12 . 3. The coated anode active material according to claim 1 , wherein the silicon oxide layer contains a Ti element. 4. The coated anode active material according to claim 1 , wherein the coating layer contains a Si element. 5. The coated anode active material according to claim 1 , wherein the coating layer includes the lithium titanate, and an Si element, and wherein a molar ratio of the Si element to a Ti element in the coating layer is 0.1 or more and 0.4 or less. 6. An all solid state battery comprising a cathode active material layer, an anode active material layer, and a solid electrolyte layer formed between the cathode active material layer and the anode active material layer; wherein the anode active material layer contains the coated anode active material according to claim 1 .
Assignees
Inventors
Classifications
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
- H01M4/366Primary
as layered products · CPC title
Halides · CPC title
Polymeric materials, e.g. gel-type or solid-type · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US12456727B2 cover?
- A main object of the present disclosure is to provide a coated anode active material capable of preventing the reaction resistance from increasing during high cycles. The present disclosure achieves the object by providing a coated anode active material including: a Si-based active material; and a coating layer that coats at least a part of a surface of the Si-based active material and includes…
- 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 Tue Oct 28 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).