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Electrode for secondary battery and method for producing the same
US12444730B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12444730-B2 |
| Application number | US-202117909475-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 19, 2021 |
| Priority date | Mar 11, 2020 |
| Publication date | Oct 14, 2025 |
| Grant date | Oct 14, 2025 |
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- Title
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Abstract
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This secondary battery electrode is provided with a core material configured from a metal foil that softens at less than or equal to 200° C., and an electrode mixture sheet which is bonded on the surface of the core material. The electrode mixture sheet includes an active material and a fibrous binder, and the active material bites into the core material, with the maximum bite depth at least 30% of the thickness of the core material. The fibrous binder may for example have polytetrafluoroethylene as the main component.
First claim
Opening claim text (preview).
The invention claimed is: 1. An electrode for a secondary battery, comprising: a core constituted with a metal foil that softens at 200° C. or lower; and an electrode mixture sheet joined to a surface of the core, wherein the electrode mixture sheet includes an active material and a fibrous binder, and the active material is embedded in the core and a maximum embedded depth is 30% or more of a thickness of the core. 2. The electrode for a secondary battery according to claim 1 , wherein the fibrous binder is mainly composed of polytetrafluoroethylene. 3. The electrode for a secondary battery according to claim 1 , wherein the core is an aluminum alloy foil containing 1.2 to 1.7 mass % of iron. 4. The electrode for a secondary battery according to claim 1 , wherein a melting point of the fibrous binder is higher than a softening point of the core by 100° C. or more.
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Classifications
involving compressing or compaction · CPC title
being polymers · CPC title
by coating on electrode collectors · CPC title
Alloys (collectors of lead alloys H01M4/685) · CPC title
Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence) · CPC title
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- What does patent US12444730B2 cover?
- This secondary battery electrode is provided with a core material configured from a metal foil that softens at less than or equal to 200° C., and an electrode mixture sheet which is bonded on the surface of the core material. The electrode mixture sheet includes an active material and a fibrous binder, and the active material bites into the core material, with the maximum bite depth at least 30…
- Who is the assignee on this patent?
- Panasonic Ip Man 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 Tue Oct 14 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).