Method of manufacturing lithium-ion secondary battery electrode
US-2017256781-A1 · Sep 7, 2017 · US
Method for manufacturing electrode plate and method for manufacturing battery
US2023187601A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023187601-A1 |
| Application number | US-202218078025-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 8, 2022 |
| Priority date | Dec 13, 2021 |
| Publication date | Jun 15, 2023 |
| Grant date | — |
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Abstract
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A method for manufacturing an electrode plate including a current collector and an active material layer includes preparing, forming, and pressing. In the preparing, a mixture is prepared by kneading an active material. In the forming, the active material layer is formed on the current collector by applying the mixture to the current collector. In the pressing, the active material layer is pressed so that active material layer has a predetermined thickness. The mixture applied to the current collector has a weight per unit area based on a specific surface area of the active material used in the mixture and a tapped density of the active material used in the mixture.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for manufacturing an electrode plate including a current collector and an active material layer, the method comprising: preparing a mixture by kneading an active material; forming the active material layer on the current collector by applying the mixture to the current collector; and pressing the active material layer so that active material layer has a predetermined thickness, wherein the mixture applied to the current collector has a weight per unit area based on a specific surface area of the active material used in the mixture and a tapped density of the active material used in the mixture. 2 . The method according to claim 1 , wherein, when the electrode plate is manufactured with the mixture using the active material of which the specific surface area is a first area, the weight per unit area of the mixture is less than that when the electrode plate is manufactured with a mixture using the active material where the specific surface area is a second area that is smaller than the first area. 3 . The method according to claim 2 , wherein, when the electrode plate is manufactured with the mixture using the active material of which the specific surface area is the first area and the tapped density is a first density, the weight per unit area of the mixture is less than that when the electrode plate is manufactured with a mixture using the active material where the specific surface area is the first area and the tapped density is a second density that is greater than the first density. 4 . The method according to claim 2 , wherein, when the electrode plate is manufactured with the mixture using the active material of which the specific surface area is the second area and the tapped density is a first density, the weight per unit area of the mixture is less than that when the electrode plate is manufactured with a mixture using the active material where the specific surface area is the second area and the tapped density is a second density that is greater than the first density. 5 . A method for manufacturing a battery including an electrode plate that includes a current collector and an active material layer, the method comprising: preparing a mixture by kneading an active material; forming the active material layer on the current collector by applying the mixture to the current collector; and pressing the active material layer so that active material layer has a predetermined thickness, wherein the mixture applied to the current collector has a weight per unit area based on a specific surface area of the active material used in the mixture and a tapped density of the active material used in the mixture.
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Classifications
- H01M4/043Primary
involving compressing or compaction · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
Energy storage using batteries · CPC title
- H01M4/1391Primary
of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx · CPC title
of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx · CPC title
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- What does patent US2023187601A1 cover?
- A method for manufacturing an electrode plate including a current collector and an active material layer includes preparing, forming, and pressing. In the preparing, a mixture is prepared by kneading an active material. In the forming, the active material layer is formed on the current collector by applying the mixture to the current collector. In the pressing, the active material layer is pres…
- Who is the assignee on this patent?
- Primearth Ev Energy Co Ltd, Toyota Motor Co Ltd, Prime Planet Energy & Solutions Inc
- 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 Jun 15 2023 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).