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US 11,309,476 B2Granted
Chalcogen-containing compound, its preparation method and thermoelectric element comprising the same
AssigneeLG Chem, Ltd.
InventorsYu Ho Min, Min Kyoung Kim, Cheol Hee Park, Kyung Moon Ko, Chee Sung Park, Myung Jin Jung
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Abstract
The present invention relates to a novel chalcogen-containing compound that exhibits excellent phase stability even at a temperature corresponding to the driving temperature of a thermoelectric element, and has a high output factor and thermoelectric figure of merit, a method for preparing the same, and a thermoelectric element including the same.
Claims14
A chalcogen-containing compound represented by the following Chemical Formula 1:
- VxMyPbzSn4-zBi2Se7 [Chemical Formula 1]
- wherein, in Chemical Formula 1, V is a vacancy, M is an alkali metal,
- x, y, z, and 4−z are mole ratios of V, M, Pb, and, Sn, respectively, x is greater than 0 and less than 1, y is greater than 0 and less than 1, x+y is greater than 0 and equal to or less than 1, z is greater than 0 and equal to or less than 4, and x+y+z is greater than 0 and equal to or less than 5.
A method for preparing the chalcogen-containing compound of claim comprising the steps of:
- melting a mixture comprising raw materials of Sn, Pb, Bi, Se, and an alkali metal (M);
- heat treating the molten mixture;
- grinding the heat treated product;
- and
- sintering the ground product.
2 more elements
Dependencies are inferred from the claim text.