Thermoelectric material, method for producing same, and thermoelectric power generation element
AssigneeNational Institute for Materials Science
InventorsTakao Mori, Zihang Liu
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Abstract
Provided are a thermoelectric material having excellent thermoelectric characteristics at room temperature; a method for producing same; and a thermoelectric power generation element. In an embodiment of the present invention, the thermoelectric material contains an inorganic compound containing magnesium (Mg), silver (Ag), antimony (Sb) and copper (Cu), and is represented by the formula Mg1−aCuaAgbSbc, and the parameters a, b and c satisfy: 0<a≤0.1, 0.95≤b≤1.05 and 0.95≤c≤1.05. The inorganic compound may be an α phase of a half-Heusler structure and have the symmetry of the space group I-4c2.
Claims17
A thermoelectric material comprising an inorganic compound comprising:
- magnesium (Mg), silver (Ag), antimony (Sb), and copper (Cu),
- wherein the inorganic compound is represented by Mg1-aCuaAgbSbc,
- wherein the parameters a, b and c satisfy:
- 0<a<0.1,
- 0.95≤b≤1.05, and
- 0.95<c<1.05
- wherein the inorganic compound comprises α-phase of a half-Heusler structure, in which Mg sites are partially replaced with Cu, and a symmetry of space group I-4c2.
Dependencies are inferred from the claim text.