Thermoelectric (Bi,Sb)2Te3–Ge0.5Mn0.5Te composites with excellent mechanical properties
| العنوان: | Thermoelectric (Bi,Sb)2Te3–Ge0.5Mn0.5Te composites with excellent mechanical properties |
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| المؤلفون: | Guoqiang Liu, Sichen Duan, Jingtao Xu, Xin-Xin Yang, Na Man, Kai Guo, Jun Jiang, Hezhu Shao, Qingsong Wu, Xiaojian Tan |
| المصدر: | Journal of Materials Chemistry A. 7:9241-9246 |
| بيانات النشر: | Royal Society of Chemistry (RSC), 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Materials science, Thermoelectric cooling, Renewable Energy, Sustainability and the Environment, Modulus, 02 engineering and technology, General Chemistry, 021001 nanoscience & nanotechnology, Thermoelectric materials, Moderate temperature, Lattice thermal conductivity, Thermoelectric effect, Vickers hardness test, General Materials Science, Composite material, 0210 nano-technology |
| الوصف: | (Bi,Sb)2Te3 alloys have been widely used in thermoelectric cooling, but their poor mechanical properties limit the module size to reach higher cooling density. Here, we report the thermoelectric and mechanical properties of (Bi,Sb)2Te3–Ge0.5Mn0.5Te composites; Ge0.5Mn0.5Te has recently been reported to be a promising thermoelectric material with high hardness in a moderate temperature range. Alloying with Ge0.5Mn0.5Te not only reduces the lattice thermal conductivity, but also improves the mechanical properties. Along with carrier concentration regulation, both excellent thermoelectric and mechanical properties have been achieved in (Bi,Sb)2Te3–Ge0.5Mn0.5Te composites. The Vickers hardness increased from 0.45 Gpa for the pristine (Bi,Sb)2Te3 to 0.81 Gpa for the sample with 1.0% Ge0.5Mn0.5Te, and a Young's modulus of 37.06 Gpa was obtained for the one with 1% Ge0.5Mn0.5Te. By adjusting the carrier concentration, the final ZT value of (Bi,Sb)2Te3 > 1.1 at 350 K. |
| تدمد: | 2050-7496 2050-7488 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::2d556ee0e95a9ed96251f2f8acd212dbTest https://doi.org/10.1039/c9ta01962fTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........2d556ee0e95a9ed96251f2f8acd212db |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20507496 20507488 |
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