Recent advances in oxide thermoelectric materials and modules

Yin, Yinong; Tudu, B.; Tiwari, Ashutosh

doi:10.1016/j.vacuum.2017.04.015

Cited by 167 publications

(87 citation statements)

References 173 publications

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“…Most of the enduring efforts in the field of TE devices have been centered primarily oninorganic TE materials like: (1) chalcogenides‐bismuth telluride (Bi 2 Te 3 ), bismuth selenide (Bi 2 Se 3 ), lead telluride (PbTe), tin telluride (SnTe), tin selenide (SnSe), copper telluride (Cu 7 Te 4 ), copper selenide (Cu 2‐X Se), PbTe–SrTe doped with Na 2 Te, alloys,(2) conducting oxides, and (3) other carbon nanofillers [carbon nanotube (CNT)], and so on. However, expensive raw material, high processing cost, heavy‐metal pollution, and large‐scale processing difficulties have limited their broader applications.…”

Section: Introductionmentioning

confidence: 99%

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Mitra

Kulsi

Kargupta

et al. 2018

J of Applied Polymer Sci

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Conducting polymer‐chalcogenide composites have recently been used as propitious contenders for light‐weight, cost‐saving, and nonhazardous thermoelectric (TE) applications. In this work, polyaniline‐bismuth selenide (PANI‐Bi2Se3) nanoplate composites are fabricated via combining in situ oxidative polymerization and solvothermal method. X‐ray diffraction spectra illustrate a uniform growth of PANI matrix over Bi2Se3 nanoplates (BS NPs), directing toward a more ordered composite structure during polymerization. There is a reduction in average crystalline‐size, estimated from Williamson–Hall plot for the composite. Transmission electron microscopic and field emission microscopic images unveil the formation of two‐dimensional (2D) layered‐like structure of the composite. Fourier transform infrared spectra shows the interactions between the BS NPs along with the polymer chains by forming a 2D layered‐like composite structure. The enhanced transport properties can be elucidated on the basis of 2D variable‐range hopping model. The augmentation of power factor (S2σ) of the composite is nearly 30 times with an insignificant change in thermal conductivity (κ) as compared to PANI. This improves the high temperature TE performance (ZT = S2σT/κ~0.18) of the composite with 30 wt % BS NPs (ZTPANI~0.009). © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46887.

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Section: Introductionmentioning

confidence: 99%

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Mitra

Kulsi

Kargupta

et al. 2018

J of Applied Polymer Sci

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“…As a result, the practical utilization of the above-mentioned thermoelectric materials as power generators has been limited and the search for materials with thermoelectric parameters capable of operating at high temperatures continues to be of great interest. Experiments have shown that metal oxides are suitable materials for solving this problem [14,[27][28][29][30][31][32][33][34]. .…”

Section: Increase In Operating Temperaturesmentioning

confidence: 99%

Section: Nanostructuringmentioning

confidence: 99%

“…Another metal oxide, in which increased interest has been exhibited, was ZnO [33,34]. ZnO-based materials are an important class of TE oxides featured by high µ values on the order of 10-100 cm 2 /V·s [104] (one of the highest reported in oxides), high thermal stability, and high PFs of the order of 1 mW/m·K 2 (comparable to that of SiGe materials) [105].…”

Section: Nanostructuringmentioning

confidence: 99%

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In2O3-Based Thermoelectric Materials: The State of the Art and the Role of Surface State in the Improvement of the Efficiency of Thermoelectric Conversion

Brînzari

Ham

2018

Crystals

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Abstract:In this paper, the thermoelectric properties of In 2 O 3 -based materials in comparison with other thermoelectric materials are considered. It is shown that nanostructured In 2 O 3 Sn-based oxides are promising for thermoelectric applications at moderate temperatures. Due to the nanostructure, specific surface properties of In 2 O 3 and filtering effects, it is possible to significantly reduce the thermal conductivity and achieve an efficiency of thermoelectric conversion inaccessible to bulk materials. It is also shown that a specific surface state at the intergrain boundary, optimal for maximizing the filtering effect, can be achieved through (1) the engineering of grain boundary parameters, (2) controlling the composition of the surrounding atmosphere, and (3) selecting the appropriate operating temperature.

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“…Hence, oxide thermoelectrics have attracted much attention in recent years for use in thermoelectric generators [8,9,10,11,12,13,14,15,16,17,18]. Whereas commonly used material classes such as chalcogenides [19,20,21,22,23,24,25,26,27,28,29], skudderudites [30,31,32], and polymers [33,34,35,36,37] exhibit good thermoelectric performance at low- and mid-temperature ranges, oxides show their advantages at elevated temperatures above 700 °C.…”

Section: Introductionmentioning

confidence: 99%

Effect of Oxygen Partial Pressure on the Phase Stability of Copper–Iron Delafossites at Elevated Temperatures

Stöcker

Moos

2018

Materials

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Oxide-based materials are promising candidates for use in high temperature thermoelectric generators. While their thermoelectric performance is inferior to commonly used thermoelectrics, oxides are environmentally friendly and cost-effective. In this study, Cu-based delafossites (CuFeO2), a material class with promising thermoelectric properties at high temperatures, were investigated. This work focuses on the phase stability of CuFeO2 with respect to the temperature and the oxygen partial pressure. For this reason, classical material characterization methods, such as scanning electron microscopy, energy dispersive X-ray spectroscopy, and X-ray diffraction, were combined in order to elucidate the phase composition of delafossites at 900 °C at various oxygen partial pressures. The experimentally obtained results are supported by the theoretical calculation of the Ellingham diagram of the copper–oxygen system. In addition, hot-stage X-ray diffraction and long-term annealing tests of CuFeO2 were performed in order to obtain a holistic review of the phase stability of delafossites at high temperatures and varying oxygen partial pressure. The results support the thermoelectric measurements in previous publications and provide a process window for the use of CuFeO2 in thermoelectric generators.

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Recent advances in oxide thermoelectric materials and modules

Cited by 167 publications

References 173 publications

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

Composite of polyaniline‐bismuth selenide with enhanced thermoelectric performance

In2O3-Based Thermoelectric Materials: The State of the Art and the Role of Surface State in the Improvement of the Efficiency of Thermoelectric Conversion

Effect of Oxygen Partial Pressure on the Phase Stability of Copper–Iron Delafossites at Elevated Temperatures

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