Thermoelectric Enhancement of Different Kinds of Metal Chalcogenides

Han, Chao; Sun, Qiao; Li, Zhen; Dou, Shi Xue

doi:10.1002/aenm.201600498

Cited by 165 publications

(124 citation statements)

References 397 publications

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“…[27] Many reviews have thoroughly summarized recent developments and future opportunities of different metallic alloys, metal oxides, [28,29] and metal chalcogenides [30,31] as TE materials. In fact, different metals that form thermocouples at their junctions have been used for many years.…”

Section: Inorganic Te Materialsmentioning

confidence: 99%

Fiber‐Based Thermoelectric Generators: Materials, Device Structures, Fabrication, Characterization, and Applications

Zhang

Lin

Tao

et al. 2017

Advanced Energy Materials

122

100

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Fiber‐based flexible thermoelectric energy generators are 3D deformable, lightweight, and desirable for applications in large‐area waste heat recovery, and as energy suppliers for wearable or mobile electronic systems in which large mechanical deformations, high energy conversion efficiency, and electrical stability are greatly demanded. These devices can be manufactured at low or room temperature under ambient conditions by established industrial processes, offering cost‐effective and reliable products in mass quantity. This article presents a critical overview and review of state‐of‐the‐art fiber‐based thermoelectric generators, covering their operational principle, materials, device structures, fabrication methods, characterization, and potential applications. Scientific and practical challenges along with critical issues and opportunities are also discussed.

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Section: Inorganic Te Materialsmentioning

confidence: 99%

Fiber‐Based Thermoelectric Generators: Materials, Device Structures, Fabrication, Characterization, and Applications

Zhang

Lin

Tao

et al. 2017

Advanced Energy Materials

122

100

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“…6 So far, the thermoelectric community is focused on bulk inorganic semiconductors, such as metal chalcogenides, for example, Bi 2 Te 3 -based materials, which are used in the most efficient and stable thermoelectric devices. 7,8 These conventional thermoelectric materials are expensive, energy-consuming in preparation, and environmentally hazardous. On the other hand, conductive conjugated polymers 9 and organic− inorganic hybrid nanocomposites, such as polymer/carbon nanotubes, 10 turn out to be very promising materials that can be implemented in large-scale, low-cost, and flexible thermoelectric elements based on thin-film architectures.…”

Section: ■ Introductionmentioning

confidence: 99%

Fine Art of Thermoelectricity

Брус

Gluba

Rappich

et al. 2018

ACS Appl. Mater. Interfaces

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A detailed study of hitherto unknown electrical and thermoelectric properties of graphite pencil traces on paper was carried out by measuring the Hall and Seebeck effects. We show that the combination of pencil-drawn graphite and brush-painted poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) films on regular office paper results in extremely simple, low-cost, and environmentally friendly thermoelectric power generators with promising output characteristics at low-temperature gradients. The working characteristics can be improved even further by incorporating ntype InSe flakes. The combination of pencil-drawn n-InSe:graphite nanocomposites and brush-painted PEDOT:PSS increases the power output by 1 order of magnitude.

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“…

generation in deep-space and waste heat recovery from vehicle exhaust, as well as ice-free refrigeration in wine-storage cabinets, hotel room mini-refrigerators, and office water coolers. [6] For effective waste heat recovery in vehicles under a 350 K temperature differential, the average or device ZT (ZT dev ) should be about 1.25 in order to increase mileage up to 10%, [1,7] while for primary power generation, an average ZT of more than 1.5 is required under an 800 K temperature differential. The conversion efficiency for these potential applications requires high ZT over a wide range of temperatures.

…”

mentioning

confidence: 99%

Three‐Stage Inter‐Orthorhombic Evolution and High Thermoelectric Performance in Ag‐Doped Nanolaminar SnSe Polycrystals

Zhang

Wang

Sun

et al. 2017

Advanced Energy Materials

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generation in deep-space and waste heat recovery from vehicle exhaust, as well as ice-free refrigeration in wine-storage cabinets, hotel room mini-refrigerators, and office water coolers. [1][2][3][4][5] The performance of TE materials is determined by the dimensionless figure of merit (ZT), defined as ZT = α 2 σT/(κ lat + κ ele ), where α, σ, κ lat , κ ele , and T are the Seebeck coefficient, electrical conductivity, lattice thermal conductivity, electronic thermal conductivity, and absolute temperature, respectively. The conversion efficiency for these potential applications requires high ZT over a wide range of temperatures. [6] For effective waste heat recovery in vehicles under a 350 K temperature differential, the average or device ZT (ZT dev ) should be about 1.25 in order to increase mileage up to 10%, [1,7] while for primary power generation, an average ZT of more than 1.5 is required under an 800 K temperature differential. [1,7] Recently, SnSe single crystals have produced a surge in the field of thermoelectrics as a new type of promising TE materials because of the intrinsically ultralow thermal conductivity (<0.4 W m −1 K −1 at 923 K) and high ZT along the b-and c-crystallographic directions (>2.3 at 923 K). [8] A new record of ZT dev ≈ 1.34 from 300-773 K along the b-crystallographic direction was achieved in thermoelectric device fabricated from hole-doped SnSe single crystal. [9] Nevertheless, the difficulties in large-scale synthesis of single crystals limit their practical applications, and extensive efforts have been devoted to the fabrication of high-performance polycrystalline counterparts. [10][11][12][13][14][15] For example, Wei et al. [12] reported a ZT of ≈0.8 at 800 K in 1% Na-and K-doped SnSe, which was produced by conventional solid state reaction followed by a spark plasma sintering (SPS) treatment. Due to an impressively low lattice thermal conductivity (≈0.20 W m −1 K −1 at 773 K) arising from the presence of coherent nanoprecipitates in the SnSe matrix, a high ZT of ≈1.1 at 773 K was achieved in the direction perpendicular to the pressing direction of SPS for ball-milled K-doped SnSe. [11] Apart from p-type alkali dopants (Li, Na, K), n-type dopants such as I and BiCl 3 are also adopted to improve the performance of polycrystalline SnSe. [14,16] For instance, a ZT of ≈0.8 at 773 K was obtained in I-doped SnSe polycrystals, whichThe ultrahigh thermoelectric performance of SnSe-based single crystals has attracted considerable interest in their polycrystalline counterparts. However, the temperature-dependent structural transition in SnSe-based thermoelectric materials and its relationship with their thermoelectric performance are not fully investigated and understood. In this work, nanolaminar SnSe polycrystals are prepared and characterized in situ using neutron and synchrotron powder diffraction measurements at various temperatures. Rietveld refinement results indicate that there is a complete inter-orthorhombic evolution from Pnma to Cmcm by a series of layer slips and stretches a...

show abstract

Thermoelectric Enhancement of Different Kinds of Metal Chalcogenides

Cited by 165 publications

References 397 publications

Fiber‐Based Thermoelectric Generators: Materials, Device Structures, Fabrication, Characterization, and Applications

Fiber‐Based Thermoelectric Generators: Materials, Device Structures, Fabrication, Characterization, and Applications

Fine Art of Thermoelectricity

Three‐Stage Inter‐Orthorhombic Evolution and High Thermoelectric Performance in Ag‐Doped Nanolaminar SnSe Polycrystals

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