Secondary battery, battery pack, and vehicle
US-2018277908-A1 · Sep 27, 2018 · US
All-solid-state battery production method and all-solid-state battery
US11764397B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11764397-B2 |
| Application number | US-202217685828-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 3, 2022 |
| Priority date | Mar 22, 2019 |
| Publication date | Sep 19, 2023 |
| Grant date | Sep 19, 2023 |
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- Title
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Abstract
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To provide a method for production of an all-solid-state battery in which cracking of the ends of the electrodes can be suppressed even if a negative electrode active material layer including lithium-titanium oxide is roll-pressed, provided is a method for the production of an all-solid-state battery, including roll-pressing to consolidate a negative electrode active material layer; wherein the all-solid-state battery has a structure including a laminate of a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, the negative electrode active material layer, and a negative electrode current collector layer in this order, the negative electrode active material layer includes a lithium-titanium oxide as a negative electrode active material, and prior to the roll-pressing, a stress relaxation rate of the negative electrode active material layer is 32.5% or more.
First claim
Opening claim text (preview).
The invention claimed is: 1. An all-solid-state battery comprising a laminate of a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode current collector layer in this order; wherein the negative electrode active material layer includes a lithium-titanium oxide as a negative electrode active material; and the negative electrode active material layer includes VGCF in only ends in a direction perpendicular to the lamination direction.
Assignees
Inventors
Classifications
- H01M4/0435Primary
Rolling or calendering · CPC title
- H01M10/0525Primary
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
of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy (H01M4/505, H01M4/525 take precedence) · CPC title
Construction or manufacture · CPC title
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- What does patent US11764397B2 cover?
- To provide a method for production of an all-solid-state battery in which cracking of the ends of the electrodes can be suppressed even if a negative electrode active material layer including lithium-titanium oxide is roll-pressed, provided is a method for the production of an all-solid-state battery, including roll-pressing to consolidate a negative electrode active material layer; wherein the…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/0435. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 19 2023 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).