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Electrode body for secondary battery
US2026045481A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2026045481-A1 |
| Application number | US-202519069703-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 4, 2025 |
| Priority date | Aug 8, 2024 |
| Publication date | Feb 12, 2026 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
An electrode body having a current collector layer and an active material layer laminated on the current collector layer, wherein the active material layer has a first layer on the current collector layer and a second layer on the first layer, the first binder included in the first layer is composed of particles in a surface contact shape, and the second binder included in the second layer is composed of particles in a point contact shape.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electrode body comprising a current collector layer and an active material layer stacked on the current collector layer, wherein: the active material layer includes a first layer on the current collector layer and a second layer on the first layer; a first binder contained in the first layer is composed of particles having a surface contact shape; and a second binder contained in the second layer is composed of particles having a point contact shape. 2 . The electrode body according to claim 1 , wherein a peel strength between the current collector layer and the first layer is 0.06 N/cm or more. 3 . The electrode body according to claim 1 , wherein the second layer has a bending degree of 0.083 or less. 4 . A secondary battery comprising the electrode body according to claim 1 . 5 . A method of manufacturing an electrode body including a current collector layer and an active material layer stacked on the current collector layer, the method comprising: stacking a first layer on the current collector layer; and stacking a second layer on the first layer, wherein: a first binder contained in the first layer is composed of particles having a surface contact shape; and a second binder contained in the second layer is composed of particles having a point contact shape.
Assignees
Inventors
Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
in the form of layers, e.g. coatings · CPC title
Processes of manufacture · CPC title
- H01M4/13Primary
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title
as layered products · CPC title
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- What does patent US2026045481A1 cover?
- An electrode body having a current collector layer and an active material layer laminated on the current collector layer, wherein the active material layer has a first layer on the current collector layer and a second layer on the first layer, the first binder included in the first layer is composed of particles in a surface contact shape, and the second binder included in the second layer is c…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/13. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Feb 12 2026 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).