Microstructure and thermoelectric performance of n-type Co4Sb11.3Te0.5Se0.2 skutterudite synthesized via microwave heating
Source abstract
Abstract
The Te-/Se-doped n-type Co4Sb11.3Te0.5Se0.2 skutterudite thermoelectric bulk was successfully fabricated by the combination of microwave synthesis and spark plasma sintering technique. The microstructure and the electrical and thermal transport properties have been systematically investigated. The experimental results show that nearly single-phase skutterudites grow in merely 5 min microwave heating. The average matrix grain size of Co4Sb11.3Te0.5Se0.2 is ∼2 μm. The carrier concentration and mobility of Co4Sb11.3Te0.5Se0.2 are 1.943×1020 n/cm-3 and 23.17 cm2V-1s-1, respectively. The maximum Seebeck coefficient is -204 μVK-1. The lattice and total thermal conductivity from room temperature to 773K are 2.11∼3.32 and 2.88∼3.78 Wm-1K-1, respectively. The highest ZT of 0.59 of Co4Sb11.3Te0.5Se0.2 was achieved at 673 K. The present synthetic method is superior especially in term of the synthesis efficiency.
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Research context
OpenAlex topics: Advanced Thermoelectric Materials and Devices · Chalcogenide Semiconductor Thin Films · Heusler alloys: electronic and magnetic properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Metallurgy Engineering, Anhui University of Technology 1 , Maxiang Road, Ma’anshan 243032, China
State key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology 2 , 287 Langongping Road, Lanzhou 730050, China
Institute of Mineral Resources Development and Utilization, Changsha Research Institute of Mining and Metallurgy CO., LTD 3 , 966 South Lushan Road, Changsha 410012, China
College of Materials Science and Engineering, Kunming University of Science and Technology 4 , 727 South Jingming Road, Chenggong New District, Kunming 650093, China
Funding
Anhui university outstanding young talent support program · Joint fund between Shenyang National Laboratory for Materials Science and State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals · National Natural Science Foundation of China
References (29)
Show source-provided references
1. Thermoelectric materials: New approaches to an old problem10.1063/1.881752 ↗
2. Complex thermoelectric materials10.1038/nmat2090 ↗
3. 1995 · 407
4. Some properties of semiconducting IrSb310.1063/1.357750 ↗
5. Preparation and thermoelectric properties of the skutterudite-related phase Ru0.5Pd0.5Sb310.1063/1.362516 ↗
6. Properties of single crystalline semiconducting CoSb310.1063/1.363405 ↗
7. Filled skutterudite antimonides: A new class of thermoelectric materials10.1126/science.272.5266.1325 ↗
8. Filled skutterudite antimonides: Electron crystals and phonon glasses10.1103/physrevb.56.15081 ↗
9. Effect of Sn substituting for Sb on the low-temperature transport properties of ytterbium-filled skutterudites
10. Thermoelectric properties of Te-doped CoSb3 by spark plasma sintering10.1063/1.2067704 ↗
11. Synthesis and high temperature transport properties of Te-doped skutterudite compounds10.1007/s10854-012-0668-y ↗
12. Ultra-fast synthesis and thermoelectric properties of Te doped skutterudites10.1039/c4ta02780a ↗
13. Panoscopic approach for high-performance Te-doped skutterudite10.1038/am.2017.1 ↗
14. Structure and thermoelectric properties of Se- and Se/Te-doped CoSb3, skutterudites synthesized by high-pressure technique10.1016/j.jallcom.2015.05.171 ↗
15. Beneficial effect of Se substitution on thermoelectric properties of Co4Sb11.9-xTexSe0.1 skutterudites10.1016/j.jssc.2012.03.027 ↗
16. Effects of synthesis temperature on the microstructure and thermoelectric properties of Te-Se Co-doped skutterudites10.1007/s11664-013-2824-4 ↗
17. Impacts of both high pressure and Te-Se double-substituted skutterudite on the thermoelectric properties prepared by HTHP10.1016/j.jallcom.2014.07.173 ↗
18. Multiple-filled skutterudites: High thermoelectric figure of merit through separately optimizing electrical and thermal transports10.1021/ja111199y ↗
19. Enhanced thermoelectric properties in CoSb3-xTex alloys prepared by mechanical alloying and spark plasma sintering10.1063/1.2815671 ↗
20. Low thermal conductivity and rapid synthesis of n-type cobalt skutterudite via a hydrothermal method10.1039/c4tc00260a ↗
21. Fast synthesis of nanocrystalline Mg2Si by microwave heating: A new route to nano-structured thermoelectric materials10.1039/c0dt00519c ↗
22. Rapid microwave preparation of thermoelectric TiNiSn and TiCoSb half-Heusler compounds10.1021/cm3011343 ↗
23. Ultra-fast preparation of high-performance thermoelectric bulk TiNiSb0.05Sn0.95 by microwave synthesis
24. Rapid microwave synthesis of indium filled skutterudites: An energy efficient route to high performance thermoelectric materials10.1016/j.materresbull.2011.08.058 ↗
25. Microwave synthesis and characterization of the series Co1−xFexSb3 high temperature thermoelectric materials10.1007/s11664-014-3197-z ↗
26. Structure and thermoelectric performance of Ti-filled and Te-doped skutterudite TixCo4Sb11.5Te0.5 bulks fabricated by combination of microwave synthesis and spark plasma sintering10.1016/j.matlet.2018.08.157 ↗
27. Microwave synthesis and sintering of TiNiSn thermoelectric bulk10.1016/j.jallcom.2015.11.089 ↗
28. MmFe4Sb12- and CoSb3-based nano-skutterudites prepared by ball milling: Kinetics of formation and transport properties10.1016/j.jallcom.2009.03.109 ↗
29. High pressure synthesis of Te-doped CoSb3 with enhanced thermoelectric performance10.1007/s10854-014-2411-3 ↗