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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Tunable electronic properties and low thermal conductivity in synthetic colusites Cu26−xZnxV2M6S32 (x ≤ 4, M = Ge, Sn)
TL;DR: In this paper, a cubic colusite structure and thermoelectric properties of the colusites have been studied and the substitution of Zn for Cu results in significant increases in both the electrical resistivity and thermopower.
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Ball milling as an effective route for the preparation of doped bornite: synthesis, stability and thermoelectric properties
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Vanadium-free colusites Cu26A2Sn6S32 (A = Nb, Ta) for environmentally friendly thermoelectrics
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