High Performance Thermoelectricity in Earth-Abundant Compounds Based on Natural Mineral Tetrahedrites
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TLDR
In this article, the authors report dimensionless thermoelectric properties of tetrahedrites, the most widespread sulfosalts on Earth, and further show that the natural mineral itself can be used directly as an inexpensive source of energy.Abstract:
Thermoelectric materials can convert waste heat into electricity, potentially improving the effi ciency of energy usage in both industry and everyday life. Unfortunately, known good thermoelectric materials often are comprised of elements that are in low abundance and require careful doping and complex synthesis procedures. Here, we report dimensionless thermoelectric fi gure of merit near unity in compounds of the form Cu 12 − x M x Sb 4 S 13 , where M is a transition metal such as Zn or Fe, for wide ranges of x . The compounds investigated here span the range of compositions of the natural mineral family of tetrahedrites, the most widespread sulfosalts on Earth, and we further show that the natural mineral itself can be used directly as an inexpensive source thermoelectric material. Thermoelectrics comprised of earth-abundant elements will pave the way to many new, low cost thermoelectric energy generation opportunities.read more
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Preparation and Thermoelectric Properties of Famatinite Cu3SbS4
Go-Eun Lee,Ji-Hee Pi,Il-Ho Kim +2 more
TL;DR: In this article, the effects of MA-HP conditions on the phase synthesis and thermoelectric properties of Famatinite Cu3SbS4 have been examined and it was determined that the electrical and thermal conductivities decreased with an increase in the HP temperature, while the Seebeck coefficient increased.
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TL;DR: Bulk-single-crystal-like electrical and thermal transport properties with a strong anisotropy are obtained, which results in an effective optimization on thermoelectric performance.
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Semiconducting Pavonites CdMBi4Se8 (M = Sn and Pb) and Their Thermoelectric Properties
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Thermoelectric Properties of Magnesium-Doped Tetrahedrite Cu12−xMgxSb4S13
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TL;DR: In this paper, a series of polycrystalline tetrahedrite samples with nominal compositions of x = 0.5, 1.0 and 1.5 were used to demonstrate that magnesium, an s-block element, can be introduced in Cu12Sb4S13 and showed that the effect of Mg2+ is similar to that of other aliovalent elements substituting for either Cu or Sb.
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Modification of the intermediate band and thermoelectric properties in Se-doped CoSbS1−xSex compounds
TL;DR: In this article, the influence of Se doping on the site of S, CoSbS1−xSex (0 ≤ x ≤ 0.09) compounds were synthesized by vacuum melting and annealing and compacted by spark plasma sintering.
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