Thermoelectric material and preparation method therefor
US-11997929-B2 · May 28, 2024 · US
Thermoelectric composite with high-entropy alloy dispersed and method for preparing the same
US12296383B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12296383-B2 |
| Application number | US-202318216608-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2023 |
| Priority date | Sep 8, 2022 |
| Publication date | May 13, 2025 |
| Grant date | May 13, 2025 |
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Abstract
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Disclosed is a thermoelectric composite with high-entropy alloy dispersed including a thermoelectric material TE having a composition in a formula TE(x %)+M(y %), and high-entropy alloy particles M having a composition in the formula and dispersed in the thermoelectric material. In the formula, a volume ratio or a molar ratio x of the thermoelectric material to the thermoelectric composite is smaller than 100, and a volume ratio or a molar ratio y of the high-entropy alloy particles to the thermoelectric composite is greater than 0 and smaller than 20.
First claim
Opening claim text (preview).
What is claimed is: 1. A thermoelectric composite with high-entropy alloy dispersed, the thermoelectric composite comprising: a thermoelectric material other than a high-entropy alloy; and high-entropy alloy particles dispersed in the thermoelectric material, wherein a volume ratio or a molar ratio x of the thermoelectric material to the thermoelectric composite is less than 100, wherein a volume ratio or a molar ratio y of the high-entropy alloy particles to the thermoelectric composite is greater than 0 and less than 20. 2. The thermoelectric composite of claim 1 , wherein the thermoelectric material includes at least one of a (Bi,Sb) 2 (Te,Se) 3 -based compound, a Sb 2 Te 3 -based compound, a CoSb 3 -based compound, a PbTe-based compound, a GeTe-based compound, or a SiGe-based compound. 3. The thermoelectric composite of claim 1 , wherein the high-entropy alloy particles have a composition in Chemical Formula 1 below (M1) x1 (M2) x2 (M3) x3 . . . (M n ) xn [Chemical Formula 1] in the Chemical Formula 1, M1 to Mn are transition metals including at least one of Nb, Ta, Ti, Hf, Zr, W, Mo, Cr, V or Re, respectively, n is the number of metal elements contained in the high-entropy alloy particles, and x1 to xn represent molar ratios of M1 to Mn, respectively, in the Chemical Formula 1, n has a range of 4≤n≤10, and xn has a range of 5≤xn≤50. 4. The thermoelectric composite of claim 1 , wherein the thermoelectric material is sintered by at least one method of hot-press, hot-deformation, or hot-extrusion. 5. The thermoelectric composite of claim 1 , wherein the thermoelectric material contains a doped dopant. 6. The thermoelectric composite of claim 1 , wherein a thermal conductivity of the thermoelectric composite at a room temperature is equal to or less than 2 W/mK. 7. The thermoelectric composite of claim 1 , wherein an electrical conductivity of the thermoelectric composite at a room temperature is equal to or greater than 100 S/cm. 8. The thermoelectric composite of claim 1 , wherein a thermoelectric figure of merit (ZT) of the thermoelectric composite is equal to or greater than 1.0. 9. The thermoelectric composite of claim 1 , wherein the high-entropy alloy particles are synthesized using a ball-milling method. 10. A method for preparing a thermoelectric composite with high-entropy alloy dispersed, the method comprising: preparing a thermoelectric material other than a high-entropy alloy; and dispersing high-entropy alloy particles in the thermoelectric material, wherein a volume ratio or a molar ratio x of the thermoelectric material to the thermoelectric composite is less than 100, wherein a volume ratio or a molar ratio y of the high-entropy alloy particles to the thermoelectric composite is greater than 0 and less than 20.
Assignees
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Classifications
- C22C30/00Primary
Alloys containing less than 50% by weight of each constituent · CPC title
Aspects linked to processes or compositions used in powder metallurgy · CPC title
Processes characterised by the sequence of their steps · CPC title
Warm or hot extruding · CPC title
by ball milling · CPC title
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- What does patent US12296383B2 cover?
- Disclosed is a thermoelectric composite with high-entropy alloy dispersed including a thermoelectric material TE having a composition in a formula TE(x %)+M(y %), and high-entropy alloy particles M having a composition in the formula and dispersed in the thermoelectric material. In the formula, a volume ratio or a molar ratio x of the thermoelectric material to the thermoelectric composite is s…
- Who is the assignee on this patent?
- Univ Industry Cooperation Group Kyung Hee Univ
- What technology area does this patent fall under?
- Primary CPC classification C22C30/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 13 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).