Solid electrolyte and method for producing solid electrolyte
US-2019074542-A1 · Mar 7, 2019 · US
Method for producing solid electrolyte having argyrodite type crystal structure
US11380934B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11380934-B2 |
| Application number | US-201916702654-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2019 |
| Priority date | Dec 5, 2018 |
| Publication date | Jul 5, 2022 |
| Grant date | Jul 5, 2022 |
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Abstract
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A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising:heat-treating a raw material mixture comprising lithium, sulfur, phosphorus and halogen in a solvent using a pressure-resistant container or under refluxing;removing the solvent; andfiring a treated product obtained by the heat treatment.
First claim
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The invention claimed is: 1. A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising: heat-treating a raw material mixture comprising lithium, sulfur, phosphorus and halogen in a solvent using a pressure-resistant container or under refluxing; removing the solvent; and firing a treated product obtained by the heat treatment. 2. The method for producing a solid electrolyte according to claim 1 , wherein a heating temperature of the heat treatment is 150° C. or more and 300° C. or less. 3. The method for producing a solid electrolyte according to claim 1 , wherein a heating temperature of the firing is 300° C. or more and 470° C. or less. 4. The method for producing a solid electrolyte according to claim 1 , wherein two or more raw materials comprising one or more selected from the group consisting of lithium, sulfur, phosphorus and halogen are mixed and pulverized in a solvent to obtain the raw material mixture. 5. The method for producing a solid electrolyte according to claim 4 , wherein the solvent comprises a hydrocarbon-based solvent and at least one of a nitrile compound and an ether compound. 6. The method for producing a solid electrolyte according to claim 1 , wherein the treated product comprises a crystal having a PS 4 structure. 7. The method for producing a solid electrolyte according to claim 6 , wherein the crystal having a PS 4 structure is one or more selected from a β-Li 3 PS 4 -type crystal structure and a Li 7 PS 6 -type crystal structure. 8. The method for producing a solid electrolyte according to claim 7 , wherein the treated product comprises 15% by weight or more of the β-Li 3 PS 4 -type crystal structure. 9. The method for producing a solid electrolyte according to claim 7 , wherein the treated product comprises 10% by weight or more of the Li 7 PS 6 -type crystal structure. 10. The method for producing a solid electrolyte according to claim 7 , wherein a total content ratio of the β-Li 3 PS 4 -type crystal structure and the Li 7 PS 6 -type crystal structure relative to a total crystal structure comprised in the treated product is 50% by weight or more and 100% by weight or less. 11. The method for producing a solid electrolyte according to claim 1 , wherein the pressure-resistant container is an autoclave. 12. The method for producing a solid electrolyte according to claim 1 , wherein a specific surface area of the treated product is 15 m 2 /g or more.
Assignees
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Classifications
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
inorganic · CPC title
- H01M10/0562Primary
Solid materials · CPC title
Halides · CPC title
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Frequently asked questions
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- What does patent US11380934B2 cover?
- A method for producing a solid electrolyte having an argyrodite-type crystal structure, the method comprising:heat-treating a raw material mixture comprising lithium, sulfur, phosphorus and halogen in a solvent using a pressure-resistant container or under refluxing;removing the solvent; andfiring a treated product obtained by the heat treatment.
- Who is the assignee on this patent?
- Idemitsu Kosan Co
- What technology area does this patent fall under?
- Primary CPC classification H01M10/0562. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 05 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).