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
Citations
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Thermoelectric properties of Al substituted tetrahedrite
Sahil Tippireddy,Sanyukta Ghosh,Rajan Biswas,Titas Dasgupta,Gerda Rogl,Gerda Rogl,Peter Rogl,Ernst Bauer,Ramesh Chandra Mallik +8 more
TL;DR: In this paper, aluminum substitution at the Cu(1) site has been shown to reduce the band degeneracy near the Fermi level with EF moving towards the bandgap, indicating effective compensation of holes.
Journal ArticleDOI
Dense twin and domain boundaries lead to high thermoelectric performance in Sn-doped Cu<sub>3</sub>SbS<sub>4</sub>
Guiwu Liu,Jasmin Brück +1 more
TL;DR: In this article , intermediate phase-free Cu 3 SbS 4 -based bulks were fabricated by incorporating a sulfurization process between melting and sintering, and the as-formed dense twin and domain boundaries in a Sn-doped Cu 3SbS4 system can significantly enhance the electrical conductivity and retain a higher level of the Seebeck coefficient based on the energy filtering effect and band flattening and convergence.
Journal ArticleDOI
Electronic Transport and Thermoelectric Properties of Cu 12-x Zn x Sb 4 S 13 Tetrahedrites Prepared by Mechanical Alloying and Hot Pressing
Journal ArticleDOI
Thermoelectric performance of materials with Cu$Ch_4$ ($Ch=$ S, Se) tetrahedra: Similarities and differences among their low-dimensional electronic structure from first principles
TL;DR: In this article, a comparative theoretical study on the thermoelectric performance of materials with Cu$Ch_4$ ($Ch=$S, Se) tetrahedra, including BiCuSeO, was performed by means of first-principles calculations.
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