Hydrothermal Synthesis and Thermoelectric Transport Properties of Impurity‐Free Antimony Telluride Hexagonal Nanoplates

Shi, Weidong; Zhou, Liang; Song, Shuyan; Yang, Jianhui; Zhang, Hongjie

doi:10.1002/adma.200702003

Cited by 162 publications

(120 citation statements)

References 36 publications

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“…From a thermodynamic perspective, the free energy of a broken covalent bond is higher than that of a dangling van der Waals bond. This means that the rate of Sb 2 Te 3 crystal growth along the top-bottom crystalline plane should be much faster than that along the c-axis, which is perpendicular to these top-bottom planes as the crystalline facets tend to develop on the low-index plane [5,14].…”

Section: Resultsmentioning

confidence: 98%

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Organic-Assisted Nano-Sized Antimony Telluride Prepared by Co-Precipitation Reductive Route

Salavati‐Niasari

Bazarganipour

2012

J Clust Sci

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Nano-sized antimony telluride is of much interest for improving the thermoelectric figure of merit. In the present work, organic-assisted antimony telluride nanorods were successfully fabricated by a simple hydrothermal method. The products were characterized by means of X-ray diffraction, scanning electron microscope, and transmission electron microscope. The results show that the typical antimony telluride synthesized by co-precipitation reductive route is rodlike in shape with about 35 nm in thickness and 300 nm in edge length.

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Section: Resultsmentioning

confidence: 98%

“…Antimony telluride (Sb 2 Te 3 )-based compounds are very promising materials for thermoelectric (TE) applications in solid-state refrigeration and power generation, [5] but their extensive application is hindered by their low thermoelectric efficiency.…”

Section: Introductionmentioning

confidence: 99%

Organic-Assisted Nano-Sized Antimony Telluride Prepared by Co-Precipitation Reductive Route

Salavati‐Niasari

Bazarganipour

2012

J Clust Sci

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“…16 Several techniques such as melt spinning (MS) and ball milling combining with spark-plasma sintering (SPS) and hot pressing have been reported to fabricate nanocomposites successfully. [20][21][22][23][24] In recent years, the thermoelectric properties of nanocomposites are encouraging because of the positive influences of nanofeatures on electrical and thermal transports. The ZT value has been significantly enhanced for the traditional materials, such as Bi 2 Te 3 , LAST, and SiGe alloys.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Thermoelectric Properties Via Combination of Nanostructurization and Elemental Doping

Zhao

Guo

Shu

et al. 2014

JOM

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Since the nanostructure was introduced to modify thermoelectric properties in 1993, many efforts have been devoted to fabricate nanostructures and investigate the electrical and thermal transports in nanostructured materials. Compared with low-dimensional materials, nanocomposites not only exhibit nanofeatures but also can be fabricated in large quantities and compatible with practical thermoelectric devices in scale and shape. This article reviews the background of nanocomposites, then the Mg 2 (Si 0.4 Sn 0.6 )Bi x solid solutions. High-manganese silicides with MnSi (HMS-MnSi), and In 4Àx Gd x Se 3 compounds are selected as examples to illustrate the combination effect of nanostructure and dopants on thermoelectric properties. In situ nanostructures successfully formed during the rapid cooling and spark-plasma sintering processing and elemental doping were achieved via melting processing. Electrical conductivities were enhanced as a result of the increased carrier concentration or carrier mobility by elemental doping. Meanwhile, thermal conductivities decreased as a result of the strong phonon scattering intensified by nanostructures. The ZTs for the specimens with optimal doping ratio were enhanced in these three types of thermoelectric materials.

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“…4 Recently, much attention has been focused on the formation of nanostructures in bulk Bi 2 Te 3 to reduce the thermal conductivity while controlling the deviation from the stoichiometric composition to adjust the carrier concentration. [5][6][7][8][9][10] Bi 2 Te 3 -based solid solutions can be prepared by crystal growth methods such as zone melting, and Bridgman and Czochralsky techniques, [11][12][13] and unidirectionally solidified ingots exhibit the best thermoelectric performance along the crystal growth direction. Nanostructured materials can be prepared by chemical routes with the advantages of low synthesis temperature and fine grain size.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Properties of the Bi2Te3 Compound Prepared by an Aqueous Chemical Method Followed by Hot Pressing

Zhang

Chen

Jiang

et al. 2011

Journal of Elec Materi

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Bi 2 Te 3 powders were synthesized at 453 K from Bi(NO 3 ) 3 AE5H 2 O and Te by an aqueous chemical method, then bulk material was fabricated by hot pressing at 673 K. To investigate the effect of microstructure on the transport properties of electrons and phonons, the thermoelectric performance of the hotpressed sample and a zone-melted crystal with similar chemical composition was measured and compared. Strong grain-boundary scattering caused a significant decrease of the thermal conductivity; however, the maximum ZT value of the hot-pressed sample was 0.28, which was lower than that of the zone-melted crystal. Further improvement could be obtained through optimization of both chemical composition and microstructure.

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Hydrothermal Synthesis and Thermoelectric Transport Properties of Impurity‐Free Antimony Telluride Hexagonal Nanoplates

Cited by 162 publications

References 36 publications

Organic-Assisted Nano-Sized Antimony Telluride Prepared by Co-Precipitation Reductive Route

Organic-Assisted Nano-Sized Antimony Telluride Prepared by Co-Precipitation Reductive Route

Improvement of Thermoelectric Properties Via Combination of Nanostructurization and Elemental Doping

Thermoelectric Properties of the Bi2Te3 Compound Prepared by an Aqueous Chemical Method Followed by Hot Pressing

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