Enhanced Thermoelectric Performance of Synthetic Tetrahedrites

Heo, Jaeseok; Laurita, Geneva; Muir, Sean; Subramanian, M. A.; Keszler, Douglas A.

doi:10.1021/cm404026k

Cited by 181 publications

(238 citation statements)

References 29 publications

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“…For Tr = Ni, high ZT value at ∼700 K and good thermal stability up to 783 K were confirmed by other research groups, [49][50][51] whereas for Tr = Ni and Zn (co-doped), ZT = 1 has not been followed up so far. Good figures of merit have been demonstrated also for Tr = Mn, 37,52,53 and Tr = Co, 54,55 as well as samples made of mixed natural and synthetic tetrahedrites. 13,[56][57][58] It should be noted that the natural minerals showed rather low ZT's due to excessive ρ.…”

Section: Tetrahedrite (P-type)mentioning

confidence: 82%

Research Update: Cu–S based synthetic minerals as efficient thermoelectric materials at medium temperatures

2016

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Synthetic minerals and related systems based on Cu–S are attractive thermoelectric (TE) materials because of their environmentally benign characters and high figures of merit at around 700 K. This overview features the current examples including kesterite, binary copper sulfides, tetrahedrite, colusite, and chalcopyrite, with emphasis on their crystal structures and TE properties. This survey highlights the superior electronic properties in the p-type materials as well as the close relationship between crystal structures and thermophysical properties. We discuss the mechanisms of high power factor and low lattice thermal conductivity, approaching higher TE performances for the Cu–S based materials.

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Section: Tetrahedrite (P-type)mentioning

confidence: 82%

Research Update: Cu–S based synthetic minerals as efficient thermoelectric materials at medium temperatures

2016

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“…3a, Cu 2 Se possesses two sublattices: the rigid FCC framework of Se atoms and the disordered and flowing sublattice of Cu. At high temperatures, Cu ions migrate from one site (interstitial one formed by Se) to another, exhibiting a flowing character that is Figure 1 Timeline of zT for selected Cu-based superionic conductors [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] (red), tetragonal [28][29][30][31][32][33][34][35][36][37] (blue) and distorted [38][39][40][41][42][43][44][45][46][47][48][49] (green) diamond-like materials and BiCuSeO oxyselenides (purple) [50][51][52][53][54][55][56][57][58][59]…”

Section: Decoupled Transport Properties By Two Independent Sublatticesmentioning

confidence: 99%

Copper chalcogenide thermoelectric materials

et al. 2018

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Cu-based chalcogenides have received increasing attention as promising thermoelectric materials due to their high efficiency, tunable transport properties, high elemental abundance and low toxicity. In this review, we summarize the recent research progress on this large family compounds covering diamond-like chalcogenides and liquid-like Cu 2 X (X=S, Se, Te) binary compounds as well as their multinary derivatives. These materials have the general features of two sublattices to decouple electron and phonon transport properties. On the one hand, the complex crystal structure and the disordered or even liquid-like sublattice bring about an intrinsically low lattice thermal conductivity. On the other hand, the rigid sublattice constitutes the charge-transport network, maintaining a decent electrical performance. For specific material systems, we demonstrate their unique structural features and outline the structure-performance correlation. Various design strategies including doping, alloying, band engineering and nanostructure architecture, covering nearly all the material scale, are also presented. Finally, the potential of the application of Cu-based chalcogenides as high-performance thermoelectric materials is briefly discussed from material design to device development.

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“…Such a concept has been successfully explored to study cage compounds with oversized atomic cages (∼>10 atoms) such as clathrates and partially filled skutterudites. 2 Recently, crystalline materials based on Cu 12 Sb 4 S 13 tetrahedrites containing earth-abundant and environmental friendly elements were found to possess lattice thermal conductivities below 1 W m −1 K −1 from 300 to 700 K. [3][4][5][6] Such a low lattice thermal conductivity, combined with their favorable electrical properties, yields high figure-of-merit values in these tetrahedrites. Various experimental and computational studies have found that this low lattice thermal conductivity is accompanied by anomalous atomic dynamics in tetrahedrites.…”

mentioning

confidence: 99%