Mg9Si5: a potential non-toxic thermoelectric material for mid-temperature applications

Singh Vijeta; Pulikkotil J. J.; Auluck S.

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Mg9Si5: a potential non-toxic thermoelectric material for mid-temperature applications

机译：MG9SI5：用于中温应用的潜在无毒热电材料

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Mid-temperature thermoelectric applications include waste heat recovery from automobile exhausts, various industrial process and solar thermoelectrics. The current systems that have been extensively investigated for mid-temperature applications are mostly tellurides. However, the low crustal abundance of tellurium contributes significantly to their price volatility which impedes their usage in commercial technology. Looking from the perspective of material cost effectiveness in terms of crustal abundance and environmental sustainability, we investigate the thermoelectric properties of Mg9Si5 systems, the constituents of which are geo-abundant and non-toxic. By means of first principles calculations, we find Mg9Si5 to be a potential mid-temperature thermoelectric material, with an operational temperature in the range of similar or equal to 400-600 K, depending on the exact carrier concentration. We also discuss the enhanced viability of substitution in Mg9Si5, a case that seems to be restricted in Mg2Si because of its chemically balanced Zintl nature.

机译：中温热电应用包括汽车排气的废热回收，各种工业过程和太阳能热电。已被广泛研究用于中温应用的目前的系统主要是碲化物。然而，低地壳丰富的碲与其价格波动贡献显着贡献，这阻碍了他们在商业技术的使用情况。从地壳丰富和环境可持续性方面寻找物质成本效益的角度，我们研究了MG9SI5系统的热电性能，其成分是地质丰富和无毒的。通过第一原理计算，我们发现MG9SI5是潜在的中温热电材料，其操作温度在相似或等于400-600k的范围内，这取决于精确的载体浓度。我们还讨论了MG9SI5中替代的增强可行性，这是由于其化学平衡的Zintl性质，似乎在MG2SI中受到限制的情况。

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《RSC Advances》 |2016年第67期|共6页
作者
Singh Vijeta; Pulikkotil J. J.; Auluck S.;
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作者单位

CSIR Natl Phys Lab Acad Sci &

Innovat Res AcSIR New Delhi India;

CSIR Natl Phys Lab Acad Sci &

Innovat Res AcSIR New Delhi India;

CSIR Natl Phys Lab Quantum Phenomenon &

Applicat Div New Delhi India;

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正文语种 eng
中图分类化学;
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1. Mg9Si5: a potential non-toxic thermoelectric material for mid-temperature applications [J] . Singh Vijeta, Pulikkotil J. J., Auluck S. RSC Advances . 2016,第67期

机译：MG9SI5：用于中温应用的潜在无毒热电材料
2. Nanocomposites of CuO/SWCNT: Promising thermoelectric materials for mid-temperature thermoelectric generators [J] . Salah Numan, Baghdadi Neazar, Alshahrie Ahmed, Journal of the European Ceramic Society . 2019,第11期

机译：CUO / SWCNT的纳米复合材料：用于中温热电发电机的有前途的热电材料
3. Thermoelectric cooler and thermoelectric generator devices: A review of present and potential applications, modeling and materials [J] . Pourkiaei Seyed Mohsen, Ahmadi Mohammad Hossein, Sadeghzadeh Milad, Energy . 2019,第Nova1期

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4. Development of Non-Toxic and Flexible Ag_2S Based Thermoelectric Material for Energy Applications [C] . Saurabh Singh, Keisuke Hirata, Gareoung Kim, . -1

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5. Development of Inexpensive, Efficient and Non-Toxic Thermoelectric Materials [D] . Gali, Anand Pratik. 2016

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6. Transparent flexible thermoelectric material based on non-toxic earth-abundant p-type copper iodide thin film [O] . C. Yang, D. Souchay, M. Kneiß, -1

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7. Mg9Si5: a potential non-toxic thermoelectric material for mid-temperature applications [O] . Vijeta Singh, J. J. Pulikkotil, S. Auluck 2016

机译：MG9SI5：用于中温应用的潜在无毒热电材料

Mg9Si5: a potential non-toxic thermoelectric material for mid-temperature applications

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