Active material, and positive electrode mixture and solid-state battery that use said active material
US-2021234158-A1 · Jul 29, 2021 · US
Inorganic compounds having an argyrodite-type structure, their preparation processes and their uses in electrochemical applications
US12444768B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12444768-B2 |
| Application number | US-202218050119-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 27, 2022 |
| Priority date | Oct 27, 2021 |
| Publication date | Oct 14, 2025 |
| Grant date | Oct 14, 2025 |
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Abstract
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The present technology relates to inorganic compounds having an argyrodite-type structure based on an alkali metal obtained by a preparation process comprising a step of grinding the sulfide of the alkali metal, the sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal. Also described are electrode materials, electrodes, electrolytes comprising said inorganic compound having an argyrodite-type structure and their uses in electrochemical cells, for example, in electrochemical accumulators, particularly in all-solid-state batteries.
First claim
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What is claimed is: 1. A process for preparing an inorganic compound having an argyrodite-type structure based on an alkali metal, the process comprising: a step of grinding sulfide of the alkali metal, sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal, wherein the alkali metal is lithium, sodium, or potassium, the inorganic compound having an argyrodite-type structure is of formula M 6−x−2y PS 5−x−y O y Z 1+x , M is the alkali metal selected from lithium, sodium, or potassium, Z is a halogen atom selected from fluoride, chloride, bromide, and iodide, x is a number such that 0≤x≤1 and represents the number of Z in excess of 1 or is equal to zero, and y is a number such that 0<y≤1. 2. The process of claim 1 , wherein the halide of the alkali metal is selected from the fluoride of the alkali metal, the chloride of the alkali metal, the bromide of the alkali metal, the iodide of the alkali metal, and a mixture of at least two thereof. 3. The process of claim 1 , wherein the inorganic compound having argyrodite-type structure is selected from inorganic compounds having an argyrodite-type structure of formulae M 5.2 PS 4.3 O 0.1 Cl 1.6 , M 5.1 PS 4.4 O 0.3 Cl 1.3 , and M 4.8 PS 4.1 O 0.3 Cl 1.6 . 4. The process of claim 1 , wherein the inorganic compound having argyrodite-type structure is selected from inorganic compounds having an argyrodite-type structure of formulae Li 5.2 PS 4.3 O 0.1 Cl 1.6 , Li 5.1 PS 4.4 O 0.3 Cl 1.3 , and Li 4.8 PS 4.1 O 0.3 Cl 1.6 . 5. The process of claim 1 , which is free of an annealing step. 6. The process of claim 2 , wherein the halide of the alkali metal is the chloride of the alkali metal, the bromide of the alkali metal, the iodide of the alkali metal, a mixture of the chloride of the alkali metal and the bromide of the alkali metal, or a mixture of the chloride of the alkali metal, the bromide of the alkali metal, and the iodide of the alkali metal.
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Classifications
by coating on electrode collectors · CPC title
inorganic · CPC title
Energy storage using batteries · CPC title
Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
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- What does patent US12444768B2 cover?
- The present technology relates to inorganic compounds having an argyrodite-type structure based on an alkali metal obtained by a preparation process comprising a step of grinding the sulfide of the alkali metal, the sulfate of the alkali metal, phosphorus pentasulfide and a halide of the alkali metal. Also described are electrode materials, electrodes, electrolytes comprising said inorganic com…
- Who is the assignee on this patent?
- Hydro Quebec
- What technology area does this patent fall under?
- Primary CPC classification H01M4/13. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 14 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).