Positive Electrode Active Material, Method for Manufacturing Positive Electrode Active Material, and Secondary Battery
US-2020358091-A1 · Nov 12, 2020 · US
Method for forming positive electrode active material
US12412893B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12412893-B2 |
| Application number | US-202017442195-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 23, 2020 |
| Priority date | Apr 5, 2019 |
| Publication date | Sep 9, 2025 |
| Grant date | Sep 9, 2025 |
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- Title
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Abstract
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A method for forming a positive electrode active material of a lithium ion secondary battery is provided. In the method for forming a positive electrode active material, a first container that includes a mixture of lithium oxide, fluoride, and a magnesium compound and fluoride that is outside the first container are provided in a heating furnace, and the heating furnace is heated at a temperature higher than or equal to a temperature at which the fluoride is volatilized or sublimated. It is further preferable that the fluoride be lithium fluoride and the magnesium compound be magnesium fluoride.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for forming a positive electrode active material, wherein a first container that includes a mixture of lithium cobalt oxide, a first fluoride, and a magnesium compound and a second fluoride that is outside the first container are provided in a heating furnace, and the heating furnace is heated at a temperature higher than or equal to a temperature at which at least one of the first fluoride or the second fluoride is volatilized or sublimated, wherein the first fluoride and the magnesium compound are different. 2. The method for forming a positive electrode active material according to claim 1 , wherein the first fluoride is lithium fluoride and the second fluoride is lithium fluoride. 3. The method for forming a positive electrode active material according to claim 2 , wherein the heating furnace is heated at higher than or equal to 730° C. and lower than or equal to 1130° C. 4. The method for forming a positive electrode active material according to claim 1 , wherein the magnesium compound is magnesium fluoride. 5. The method for forming a positive electrode active material according to claim 1 , wherein the heating furnace is heated after an atmosphere in the heating furnace is replaced with oxygen. 6. A method for forming a positive electrode active material, wherein a first container that contains a mixture of lithium cobalt oxide, a first fluoride, and a magnesium compound and a second container that includes a second fluoride are provided in a heating furnace, and the heating furnace is heated at a temperature higher than or equal to a temperature at which at least one of the first fluoride or the second fluoride is volatilized or sublimated, wherein the first fluoride and the magnesium compound are different. 7. The method for forming a positive electrode active material according to claim 6 , wherein the first fluoride is lithium fluoride and the second fluoride is lithium fluoride. 8. The method for forming a positive electrode active material according to claim 7 , wherein the heating furnace is heated at higher than or equal to 730° C. and lower than or equal to 1130° C. 9. The method for forming a positive electrode active material according to claim 6 , wherein the magnesium compound is magnesium fluoride.
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Classifications
Positive electrodes · CPC title
involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis · CPC title
specially adapted for electrodes (carbonisation or activation of carbon for the manufacture of electrodes H01G11/34) · CPC title
specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation · CPC title
Electric properties · CPC title
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- What does patent US12412893B2 cover?
- A method for forming a positive electrode active material of a lithium ion secondary battery is provided. In the method for forming a positive electrode active material, a first container that includes a mixture of lithium oxide, fluoride, and a magnesium compound and fluoride that is outside the first container are provided in a heating furnace, and the heating furnace is heated at a temperatu…
- Who is the assignee on this patent?
- Semiconductor Energy Lab
- What technology area does this patent fall under?
- Primary CPC classification H01M4/525. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Sep 09 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).