Electrode and preparation method thereof, electrochemical apparatus, and electronic apparatus
US-2024297307-A1 · Sep 5, 2024 · US
Method of producing electrode, and method of producing secondary battery
US2025096224A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025096224-A1 |
| Application number | US-202418822470-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 3, 2024 |
| Priority date | Sep 19, 2023 |
| Publication date | Mar 20, 2025 |
| Grant date | — |
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Abstract
Official abstract text for this publication.
An electrode production method that can suppress the thickness nonuniformity in an electrode is provided. The electrode production method includes: forming a first active material layer on a first face of a current collector; pressing the first active material layer for the first time; and pressing the first active material layer for the second time after said first pressing, wherein the proportion of a pressing linear pressure P 2 in said second pressing to a pressing linear pressure P 1 in said first pressing is 100% to 200%.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method of producing an electrode, the method comprising: forming a first active material layer on a first face of a current collector; pressing the first active material layer for a first time; and pressing the first active material layer for a second time after said first pressing, wherein a proportion of a pressing linear pressure P 2 in said second pressing to a pressing linear pressure P 1 in said first pressing is 100% to 200%. 2 . The method according to claim 1 , wherein the proportion is 100% to 125%. 3 . The method according to claim 1 , further comprising: heating the first active material layer between said first pressing and said second pressing. 4 . The method according to claim 1 , further comprising: forming a second active material layer on a second face of the current collector between said first pressing and said second pressing. 5 . A method of producing a secondary battery, the method comprising: preparing an electrode by the electrode production method according to claim 1 ; and preparing a secondary battery by use of the electrode.
Assignees
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Classifications
Processes of manufacture · CPC title
by coating on electrode collectors · CPC title
Rolling or calendering · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
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- What does patent US2025096224A1 cover?
- An electrode production method that can suppress the thickness nonuniformity in an electrode is provided. The electrode production method includes: forming a first active material layer on a first face of a current collector; pressing the first active material layer for the first time; and pressing the first active material layer for the second time after said first pressing, wherein the propor…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/043. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Mar 20 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).