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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Pressure-induced quenching of planar rattling in Cu 10 Zn 2 Sb 4 S 13 studied by specific heat and x-ray diffraction measurements
TL;DR: In this article, the authors studied the pressure effect on the rattling of tetrahedrite and type-I clathrate by specific heat and x-ray diffraction measurements.
Journal ArticleDOI
Role of annealing atmosphere on the crystal structure and composition of tetrahedrite–tennantite alloy nanoparticles
TL;DR: Tetrahedrite-tennantite (TET-TEN, Cu12Sb4S13-Cu12As 4S13) alloys spanning the entire Sb-As composition range were synthesized using a hot-injection method without any detectable impurities as mentioned in this paper.
Journal ArticleDOI
Correlation between thermal-vibration-induced large displacement of Cu atoms and phase transition in Cu4SnS4: First-principles investigation
TL;DR: In this paper, first-principles calculations and first-parameter molecular dynamics (FPMD) simulations for Cu4SnS4 were performed to clarify the origin of the structural phase transition at 232 K between the high-temperature phase (HP) and low-time temperature phase (LP), which leads to an experimentally measured drastic change in the transport properties of Cu4snS4.
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Thermoelectric properties of high power factor sulfide NiSbS and Co substitution system Ni1− x Co x SbS
TL;DR: In this article, experimental and theoretical investigations of high power factor sulfide Ni1− x Co x SbS (x = 0, 0.20, and 0.40) are described.
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The unique evolution of transport bands and thermoelectric performance enhancement by extending low-symmetry phase to high temperature in tin selenide
Kunling Peng,Bo Zhang,Hong Wu,Hailiang Che,Xuefeng Sun,Jianjun Ying,Guiwen Wang,Zhe Sun,Guoyu Wang,Xiaoyuan Zhou,Xianhui Chen +10 more
TL;DR: In this paper, an extension of a low temperature phase with a low-symmetry lattice structure, which has excellent electrical properties and low thermal conductivity, enhances the thermoelectric performance via a sulfur solid solution.
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High-Thermoelectric Performance of Nanostructured Bismuth Antimony Telluride Bulk Alloys
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