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US 2022/0102607 A1Published application
Thermoelectric material and preparation method therefor
AssigneeLG Electronics Inc.
InventorsJongrae LIM, Jun KIM, Jooyoung PARK, Jeonghun SON, Youngil JANG
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Abstract
The present invention relates to a thermoelectric material and, specifically, to a thermoelectric material capable of improving the figure of merit and a preparation method therefor. In the present invention, the thermoelectric material may comprise: a matrix compound having a composition of chemical formula 1 or 2; and particles having a composition of chemical formula 3 dispersed in the matrix compound. (AB2)x(Bi2Se2.7Te0.3)1-x, (CB)x(Bi2Se2.7Te0.3)1-x, DyEz.
Claims16
A thermoelectric material comprising:
- a matrix compound having a composition of Chemical Formula 1 or Chemical Formula 2 below;
- and
- particles having a composition of Chemical Formula 3 dispersed in the matrix compound.
- (AB2)x(Bi2Se2.7Te0.3)1-x, <Chemical Formula 1>
- where A is a divalent cationic element, B is a monovalent anion element, and x satisfies 0<x≤0.4,
- (CB)x(Bi2Se2.7Te0.3)1-x, <Chemical Formula 2>
- where C is a monovalent cation element, B is a monovalent anion element, and x satisfies 0<x≤0.4, and
- DyEz, <Chemical Formula 3>
- where D is Cu, Ag, Pd or a combination thereof, E is S, Se, Te, or a combination thereof, and y satisfies 0≤y≤2 or z satisfies 0≤z≤1.
6 more elements
A method for preparing a thermoelectric material, the method comprising:
- preparing a bulk thermoelectric material using a thermoelectric material raw material;
- preparing the bulk thermoelectric material into powder;
- adding a metal additive containing a first material made of Cu, Ag, Pd, or a combination thereof and a second material made of S, Se, Te, or a combination thereof to the powder;
- producing an intermediate using the powder and the metal additive;
- and
- sintering the intermediate.
3 more elements
Dependencies are inferred from the claim text.