Solid-state structures with volatile sintering aids, and methods for fabrication and use thereof
US-2024429439-A1 · Dec 26, 2024 · US
Cathode layer and solid-state battery
US2025323314A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025323314-A1 |
| Application number | US-202519033721-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 22, 2025 |
| Priority date | Apr 11, 2024 |
| Publication date | Oct 16, 2025 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A cathode layer comprising at least a cathode active material and a solid electrolyte, wherein the cathode active material is cathode active material particles, an average particle diameter of the cathode active material particles is 2.5 μm or more and 4.5 μm or less, and a normalized interface length value A (μm−1) obtained by dividing a length (μm) of an interface between the cathode active material and the solid electrolyte confirmed from a SEM image of a cross section of the cathode layer by an area (μm2) of the cathode active material in SEM image is 1.15 or more.
First claim
Opening claim text (preview).
What is claimed is: 1 . A cathode layer including at least a cathode active material and a solid electrolyte, wherein the cathode active material is cathode active material particles, an average particle diameter of the cathode active material particles is no less than 2.5 μm and no more than 4.5 μm, and a normalized interface length value A (μm −1 ) that is obtained by dividing a length (μm) of an interface between the cathode active material and the solid electrolyte that is confirmed from a scanning electron microscope (SEM) image of a cross-section of the cathode layer, by an area (μm 2 ) of the cathode active material in the SEM image, is no less than 1.15. 2 . The cathode layer according to claim 1 , wherein the average particle diameter of the cathode active material particles is no less than 3.0 μm and no more than 4.0 μm. 3 . The cathode layer according to claim 1 , wherein the solid electrolyte is a sulfide solid electrolyte. 4 . The cathode layer according to claim 1 , wherein the cathode active material is a lithium-ion conductive-compound-coated cathode active material in which a lithium-ion conductive compound is coated on at least part of a surface of the cathode active material. 5 . A solid-state battery, including the cathode layer according to claim 1 .
Assignees
Inventors
Classifications
with solid electrolyte · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M10/0562Primary
Solid materials · CPC title
Li-accumulators · CPC title
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
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- What does patent US2025323314A1 cover?
- A cathode layer comprising at least a cathode active material and a solid electrolyte, wherein the cathode active material is cathode active material particles, an average particle diameter of the cathode active material particles is 2.5 μm or more and 4.5 μm or less, and a normalized interface length value A (μm−1) obtained by dividing a length (μm) of an interface between the cathode active m…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0562. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Oct 16 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).