Positive electrode active material and preparation method thereof, positive electrode plate, secondary battery, battery module, battery pack, and electric apparatus
US-2024429384-A1 · Dec 26, 2024 · US
Method for forming positive electrode active material
US2022190332A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022190332-A1 |
| Application number | US-202017442195-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 23, 2020 |
| Priority date | Apr 5, 2019 |
| Publication date | Jun 16, 2022 |
| Grant date | — |
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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
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1 . A method for forming a positive electrode active material, wherein 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. 2 . A method for forming a positive electrode active material, wherein a first container that contains a mixture of lithium oxide, fluoride, and a magnesium compound and a second container that includes 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 the fluoride is volatilized or sublimated. 3 . The method for forming a positive electrode active material according to claim 1 , wherein the fluoride is lithium fluoride. 4 . The method for forming a positive electrode active material according to claim 3 , wherein the heating furnace is heated at higher than or equal to 730° C. and lower than or equal to 1130° C. 5 . The method for forming a positive electrode active material according to claim 1 , wherein the magnesium compound is magnesium fluoride. 6 . 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. 7 . The method for forming a positive electrode active material according to claim 2 , wherein the 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 2 , wherein the magnesium compound is magnesium fluoride.
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by thermal analysis data, e.g. TGA, DTA, DSC · CPC title
containing alkaline earth metals, e.g. SrNiO3 or SrNiO2 · CPC title
containing alkaline earth metals, e.g. SrCoO3 · CPC title
Micrometer sized, i.e. from 1-100 micrometer · CPC title
Magnetic properties · CPC title
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- What does patent US2022190332A1 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 Thu Jun 16 2022 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).