Solid electrolyte and preparation method thereof, and electrochemical device and electronic device comprising same
US-11050081-B2 · Jun 29, 2021 · US
Phosphorus-free sulfide solid electrolyte
US12288845B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12288845-B2 |
| Application number | US-202217708180-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 30, 2022 |
| Priority date | Nov 1, 2019 |
| Publication date | Apr 29, 2025 |
| Grant date | Apr 29, 2025 |
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Abstract
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A solid electrolyte material having a general chemical formula of Li 2+x M 2+x M′ 1−x S 6 , where M is at least one of Al, Ga or In, M′ is at least one of Si or Ge, and 0<x≤0.5. The solid electrolyte material according to the application is simple in composition, contains no phosphorus sensitive to water, and has good Li+ conductivity at the same time.
First claim
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What is claimed is: 1. A solid electrolyte material, wherein a general chemical formula of the material is Li 2+x M 2+x M′ 1−x S 6 , where M is at least one of Al, Ga or In, M′ is at least one of Si or Ge, and 0<x≤0.5. 2. The solid electrolyte material according to claim 1 , wherein M is Al and M′ is Si. 3. The solid electrolyte material according to claim 1 , wherein lattice parameters thereof are about a=13.0±2.0 Å, b=8.0±2.0 Å, c=13.0±2.0 Å, α=90.0°±5°, β=110.0°±10°, and γ=90.0° 5°. 4. The solid electrolyte material according to claim 1 , wherein lattice parameters thereof are about a=12.0±1.0 Å, b=7.0±1.0 Å, c=12.0±1.0 Å, α=90.0°±5°, β=105°±5°, and γ=90.0°±5°. 5. The solid electrolyte material according to claim 1 , wherein the material has diamond-like structural characteristics, coordination of M 3+ and M′ 4+ in a structure with S 2− forms tetrahedrons [MS 4 ] and [M′S 4 ], all corner-sharing tetrahedrons are connected, and Li + is filled in a gap between tetrahedrons. 6. The solid electrolyte material according to claim 1 , wherein diffraction peaks occur at about 14.5°±3°, 15.5°±3°, 17°±3°, 25.5°±3°, 31.5°±3°, or 53.0°±3° in an XRD spectrogram. 7. The solid electrolyte material according to claim 2 , wherein a Li + migration barrier thereof is no less than about 0.45 eV. 8. The solid electrolyte material according to claim 2 , wherein a PBE band gap thereof is no less than about 2.80 eV. 9. An electrochemical device, comprising: a positive electrode, a negative electrode, and a solid electrolyte; the solid electrolyte comprises a solid electrolyte material, wherein a general chemical formula of the solid electrolyte material is Li 2+x M 2+x M′ 1−x S 6 , where M is at least one of Al, Ga or In, M′ is at least one of Si or Ge, and 0<x≤0.5. 10. The electrochemical device according to claim 9 , wherein M is Al and M′ is Si. 11. An electronic device, comprising the electrochemical device according to claim 9 . 12. The solid electrolyte material according to claim 2 , wherein the material has diamond-like structural characteristics, coordination of M 3+ and M′ 4+ in a structure with S 2− forms tetrahedrons [MS 4 ] and [M′S 4 ], all corner-sharing tetrahedrons are connected, and Li + is filled in a gap between tetrahedrons.
Assignees
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Classifications
inorganic · CPC title
Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title
Construction or manufacture · CPC title
Li-accumulators · CPC title
- H01M10/0562Primary
Solid materials · CPC title
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- What does patent US12288845B2 cover?
- A solid electrolyte material having a general chemical formula of Li 2+x M 2+x M′ 1−x S 6 , where M is at least one of Al, Ga or In, M′ is at least one of Si or Ge, and 0<x≤0.5. The solid electrolyte material according to the application is simple in composition, contains no phosphorus sensitive to water, and has good Li+ conductivity at the same time.
- Who is the assignee on this patent?
- Ningde Amperex Technology Ltd
- 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 Apr 29 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).