High-Performance (Ag x SbTe x/2+1.5)15(GeTe)85 Thermoelectric Materials Prepared by Melt Spinning

Chen, Yingying; Zhu, Tiejun; Yang, Shenghui; Zhang, S. N.; Miao, Wentao; Zhao, Xinbing

doi:10.1007/s11664-010-1202-8

Cited by 19 publications

(6 citation statements)

References 17 publications

(14 reference statements)

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“…Benefiting from rational thermoelectric designs, significant progress has been made on high-performance and cost-effective thermoelectric materials. Figure a presents the reported state-of-the-art thermoelectric materials with maximum ZT values ( ZT max ), cost, and cost-effectiveness ( ZT max /cost), including clathrates, − GeTe, − half-Heuslers, − Bi 2– x Sb x Te 3 (BST), ,− SnTe, − …”

Section: Introductionmentioning

confidence: 99%

“…Notably, high ZT max values of ≥2.4 were reported in some of the thermoelectric materials, such as GeTe, ,, PbTe, , SnSe, ,, and Cu 2 Se. ,,, However, part of these materials with high ZT max values have not exhibited high reproducibility; thus they are controversial with either unclear mechanisms or improper evaluations of thermoelectric properties. Figure b summarizes the ZT values of these materials measured in the last decade, − ,− …”

Section: Introductionmentioning

confidence: 99%

“… ZT values for state-of-the-art thermoelectric materials in the last 10 years. (a) Reported maximum ZT values ( ZT max ) with error bars, calculated cost, and calculated cost-effectiveness ( ZT max /cost), and (b) timeline for the state-of-the-art thermoelectric materials (bulks), including Bi 2– x Sb x Te 3 (BST), ,− BiCuSeO, − clathrates, − Cu 2– x Se, ,,− GeTe, − …”

Section: Introductionmentioning

confidence: 99%

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Advanced Thermoelectric Design: From Materials and Structures to Devices

2020

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The long-standing popularity of thermoelectric materials has contributed to the creation of various thermoelectric devices and stimulated the development of strategies to improve their thermoelectric performance. In this review, we aim to comprehensively summarize the state-of-the-art strategies for the realization of high-performance thermoelectric materials and devices by establishing the links between synthesis, structural characteristics, properties, underlying chemistry and physics, including structural design (point defects, dislocations, interfaces, inclusions, and pores), multidimensional design (quantum dots/wires, nanoparticles, nanowires, nano-or microbelts, few-layered nanosheets, nano-or microplates, thin films, single crystals, and polycrystalline bulks), and advanced device design (thermoelectric modules, miniature generators and coolers, and flexible thermoelectric generators). The outline of each strategy starts with a concise presentation of their fundamentals and carefully selected examples. In the end, we point out the controversies, challenges, and outlooks toward the future development of thermoelectric materials and devices. Overall, this review will serve to help materials scientists, chemists, and physicists, particularly students and young researchers, in selecting suitable strategies for the improvement of thermoelectrics and potentially other relevant energy conversion technologies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Advanced Thermoelectric Design: From Materials and Structures to Devices

2020

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“…[2][3][4][5] Alloying is one of the few proven strategies that lead to the best zTs in materials for high temperature applications. Among them are the well known SiGe 6-8 and TAGS [9][10][11][12] alloys used in the radioisotope thermoelectric generators (RTGs) powering multiple spacecras for decades. Alloying in thermoelectrics provides a wide control of different material properties, including thermal conductivity, 13-15 the band structure, [16][17][18][19][20] mechanical properties 21 and even carrier density: 22,23 all closely related to the thermoelectric performance and zT.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric alloys between PbSe and PbS with effective thermal conductivity reduction and high figure of merit

Wang

Cao

et al. 2014

J. Mater. Chem. A

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The n-type alloys between PbSe and PbS are studied. The effect of alloy composition on transport properties is evaluated and the results are interpreted with theories based on random atomic site substitution. The alloying in PbSe 1Àx S x brings thermal conductivity reduction, carrier mobility reduction as well as change of effective mass. When all these factors are evaluated, both experimentally and theoretically, the optimized thermoelectric performance is found to change gradually with alloy composition. High zT can be found in all PbSe 1Àx S x alloys. The possibility of achieving significant improvement of zT through alloying is also discussed.

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“…Besides substituting or doping, the introduction of nanophase/matrix interfaces can also enhance phonon scattering and decrease lattice conductivity, thus improving the ZT value of thermoelectric materials. The melt spinning (MS) process has been widely used in the preparation of various thermoelectric materials, such as PbTe [11,12], Mg 2 Si 0.4 Sn 0.6 [13,14], skutterudite compounds [15,16], AgSbTe 2 [17,18], etc. Previous results show that a large number of finely microstructured and nanoscale grains can be obtained by MS.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Properties of Cu2SnSe3-Based Composites Containing Melt-Spun Cu–Te

Zhao

Wang

et al. 2019

Metals

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In this study, the Cu–Te alloy ribbons containing nanocrystalline structures were prepared by melt spinning (MS), and were composed of Cu2−xTe, Cu2Te, Cu3−xTe, and CuTe phases. Crystal grains on both sides of the ribbons were uniformly distributed and the grain size of the contact surface was about 400 nm. The Cu–Te powder was incorporated into the Cu2SnSe3 powder by the ball milling process and the Cu–Te/Cu2SnSe3 thermoelectric composite was prepared by spark plasma sintering (SPS). With the amount of Cu–Te powder increasing, the carrier concentration of the Cu–Te/Cu2SnSe3 composite increased, while the carrier mobility and electrical conductivity initially increased and then decreased. Compared to the Seebeck coefficient of the Cu2SnSe3 matrix, the Seebeck coefficient of the Cu–Te/Cu2SnSe3 samples increased slightly. Moreover, the Cu–Te/Cu2SnSe3 composites had lower thermal conductivity and lattice thermal conductivity over the whole temperature range. The lattice thermal conductivity of the 0.8 vol.% Cu–Te/Cu2SnSe3 composite achieved the lowest value of 0.22 W/m·K, which was 78% lower than that of the Cu2SnSe3 matrix. The maximum figure of merit of the 0.8 vol.% Cu–Te/Cu2SnSe3 composite was 0.45 at 700 K.

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High-Performance (Ag x SbTe x/2+1.5)15(GeTe)85 Thermoelectric Materials Prepared by Melt Spinning

Cited by 19 publications

References 17 publications

Advanced Thermoelectric Design: From Materials and Structures to Devices

Advanced Thermoelectric Design: From Materials and Structures to Devices

Thermoelectric alloys between PbSe and PbS with effective thermal conductivity reduction and high figure of merit

Thermoelectric Properties of Cu2SnSe3-Based Composites Containing Melt-Spun Cu–Te

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