Enhanced Thermoelectric Properties of W- and Fe-Substituted MnSi γ

Ghodke, Swapnil; Hiroishi, Naoya; Yamamoto, Akio; Ikuta, Hiroshi; Matsunami, Masaharu; Takeuchi, Tsunehiro

doi:10.1007/s11664-016-4688-x

Cited by 26 publications

(31 citation statements)

References 12 publications

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“…Competitive ZT values in the range 0.5-0.7 have been measured on doped HMS materials synthesized by different techniques, which makes them technologically relevant for integration into thermoelectric devices [1][2][3], possibly in combination with n-type silicides (SiGe alloys, Mg 2 (Si,Ge,Sn) [4,5]). Recently, supersaturated HMS materials synthesized by melt spinning achieved significantly improved performance with ZT values of about 1 for p-type Re-doped HMS [6][7][8]. Until now most of the work on thermoelectric materials has focused on increasing ZT.…”

Section: Introductionmentioning

confidence: 99%

Stability and thermoelectric performance of doped higher manganese silicide materials solidified by RGS (ribbon growth on substrate) synthesis

Pichon¹,

Berneron²,

Levinsky

et al. 2020

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Stability and thermoelectric performance of doped higher manganese silicide materials solidified by RGS (ribbon growth on substrate) synthesis

Pichon¹,

Berneron²,

Levinsky

et al. 2020

Journal of Alloys and Compounds

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“…The W − substituted HMS has p‐type of conductivity, whereas the double substitution by W and Fe yielded n‐type material. Both compounds have comparable ZT , with maximum of about 0.5 at 700 K. The n‐type Mn 18.4 W 3.6 Fe 14.4 Si 63.6 is actually alloy of HMS and FeSi 2 , which probably is thermodynamically unstable . Rhenium‐substituted HMS Mn 30.4 Re 6 Si 63.6 showed record ZT of 1.04 at 920 K due to simultaneous reduction of the electrical resistivity and of the thermal conductivity in comparison with the Mn 36.4 Si6 3.6 control sample, see Figure .…”

Section: Mnsi75mentioning

confidence: 94%

“…However the sample orientation was not specified in the original publication. Remarkable results were obtained by substitution of Mn by heavier elements, W, Re, or by double substitution by W and Fe . Samples of p‐type Mn 34.6 W 1.8 Si 63.6 , Mn 36.4− x Re x Si 63.6 ( x = 0, 4, 6, and 8) and n‐type Mn 18.4 W 3.6 Fe 14.4 Si 63.6 were prepared by arc‐melting, liquid quenching and SPS sintering.…”

Section: Mnsi75mentioning

confidence: 99%

Silicide Thermoelectrics: Materials for Energy Harvesting

Бурков

2018

Physica Status Solidi (a)

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The silicide family of thermoelectrics includes more than 15 compounds, among them are semimetals and semiconductors with band gaps ranging from 0.1 to 2.3 eV. The silicides have obvious attractive features as the materials for thermoelectric energy converters. Many of the constituting elements are abundant, have low price, the compounds have good high temperature stability. Another feature of silicides, much less recognized by thermoelectric community, is their compatibility with silicon-based microelectronic technology. It opens a door for development of integrated thermoelectric power sources (energy harvesters) for electronic circuitry of wireless sensors and actuators. Considerable efforts have been undertaken, especially in the past 10 years, in order to develop efficient silicide-based thermoelectric materials. Currently the most efficient silicide thermoelectrics are based on Mg 2 (Si-Sn) alloys, MnSi 1.75 and ReSi 1.75 . This article is a review of the current status of the research on the silicide-based thermoelectric materials. Most of the non-transition metal silicides were intentionally excluded from this review. On the other hand more attention is paid to the silicide materials, which have been not in the research focus; to compounds with topologically nontrivial electronic structure, such as CoSi and SrSi 2 .

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“…The peak figure of merit ZT of pristine polycrystalline HMS (ZT ≈ 0.4 at 700 K) is larger than that of single-crystal HMS. Re-supersaturation has increased the peak ZT of p-type HMS to ≈1 at 920 K, and W/Fe-supersaturation for n-type HMS has resulted in peak ZT of ≈0.5 at 700 K [ 82 , 83 ]. These two methods were executed by combining the high-temperature melting method with liquid quenching.…”

Section: Temperature-dependent Classification Of Low-toxic Earth-abunmentioning

confidence: 99%

Low-Toxic, Earth-Abundant Nanostructured Materials for Thermoelectric Applications

2021

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This article presents recent research directions in the study of Earth-abundant, cost-effective, and low-toxic advanced nanostructured materials for thermoelectric generator (TEG) applications. This study’s critical aspect is to systematically evaluate the development of high-performance nanostructured thermoelectric (TE) materials from sustainable sources, which are expected to have a meaningful and enduring impact in developing a cost-effective TE system. We review both the performance and limitation aspects of these materials at multiple temperatures from experimental and theoretical viewpoints. Recent developments in these materials towards enhancing the dimensionless figure of merit, Seebeck coefficient, reduction of the thermal conductivity, and improvement of electrical conductivity have also been discussed in detail. Finally, the future direction and the prospects of these nanostructured materials have been proposed.

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Enhanced Thermoelectric Properties of W- and Fe-Substituted MnSi γ

Cited by 26 publications

References 12 publications

Stability and thermoelectric performance of doped higher manganese silicide materials solidified by RGS (ribbon growth on substrate) synthesis

Stability and thermoelectric performance of doped higher manganese silicide materials solidified by RGS (ribbon growth on substrate) synthesis

Silicide Thermoelectrics: Materials for Energy Harvesting

Low-Toxic, Earth-Abundant Nanostructured Materials for Thermoelectric Applications

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