The aim of present work is to prepare by using the method of reactive spark plasma sintering, a ceramic material based on the high-entropy Bi–Sb-Te–Se–S system, the nominal composition of which corresponds to the BiSbTeSeS compound (all the atoms are taken in an equiatomic ratio), and to analyze the features in the microstructure and thermoelectric properties of this material. During reactive spark plasma sintering of starting Bi, Sb, Se, Te, and S powders, hexagonal and orthorhombic phases are formed in the bulk material. The hexagonal phase, which corresponds to the high-entropy compound Bi1.5Sb0.5Te1.25Se1.25S0.5, forms a continuous connected “net”. The orthorhombic phase, which corresponds to the wide-gap Sb3S2 semiconductor, fills the hollows in the net isolated from each other. The thermoelectric properties of the material being developed, which are mailnly due to the properties of the high-entropy phase, are promising enough (the maximum value of the thermoelectric figure of merit reaches ~ 0.18). Therefore, this material should be considered as a new prospect high-entropy thermoelectric.
Alexei E. Vasil’ev – PhD of Physics and Mathematics, scientific worker of laboratory of prospect materials for alternative energy, Belgorod State Technological University named after V. G. Shukhov (BGTU), Belgorod, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Oleg N. Ivanov – PhD Physics and Mathematics, scientific leader OF laboratory of prospect materials for alternative energy, Belgorod State Technological University named after V. G. Shukhov (BGTU), Belgorod, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Maxim N. Yaprintsev – PhD of Physics and Mathematics, scientific worker of Joint Research Centre “Technologies and Materials of BSU”, Belgorod State University (BSU), Belgorod, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Ekaterina N. Yaprintsevа – postgraduate student 2 years of studyJoint Research Centre “Technologies and Materials of BSU”, Belgorod State University (BSU), Belgorod, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Alla V. Efremenko – mathematics teacher, Municipal Budgetary educational Institution “Secondary School No. 4” of Belgorod (MBOU Secondary School No. 4 of Belgorod), Belgorod, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
1. George E. P., Raabe D., Ritchie R. O. High-entropyalloys // Nat. Rev. Mater.2019. V. 4. P. 515–534.
2. Ye Y. F., Wang Q., Lu J., et al. High-entropy alloy: challenges and prospects // Mater. Today. 2016. V. 19. P. 349 – 362.
3. George E. P., Curtin W. A., Tasan C. C. High entropy alloys: A focused review of mechanical properties and deformation mechanisms // Acta Mater. 2020. V. 188. P. 435 – 474.
4. Shafeie S., Guo S., Hu Q., et al. High-entropy alloys as high-temperature thermoelectric materials // J. Appl. Phys. 2015. V. 118. P. 184905 – 184915.
5. Zhang R.-Z., Gucci F., Zhu H., et al. Data-driven design of ecofriendly thermoelectric high-entropy sulfides // Inorg. Chem. 2018. V. 57. P. 13027 – 13033.
6. Karati A., Nagini M., Ghosh S., et al. Ti2NiCoSnSb – a new half-Heusler type high-entropy alloy showing simultaneous increase in Seebeck coefficient and electrical conductivity for thermoelectric applications // Sci. Rep. 2019. V. 9. P. 5331 – 5343.
7. Yaprintseva E., Vasil’ev F., Yaprintsev M., et al. Thermoelectric properties of medium-entropy PbSbTeSe alloy prepared by reactive spark plasma sintering // Mater. Lett. 2022. V. 309. P. 131416 – 131420.
8. Raphel A., Vivekanandhan P., Kumaran S. High entropy phenomena induced low thermal conductivity in BiSbTe1.5Se1.5 thermoelectric alloy through mechanical alloying and spark plasma sintering // Mater. Lett. 2020. V. 269. P. 127672 – 127676.
9. Fan Z., Wang H., Wu Y., et al. Thermoelectric high-entropy alloys with low lattice thermal conductivity // RSC Adv. 2019. V. 6. P. 52164 – 52170.
10. Ivanov O., Yaprintsev M., Vasil’eva A. Micro-structure and thermoelectric properties of the medium-entropy block-textured BiSbTe1.5Se1.5 alloy // J. Alloys Compd. 2021. V. 872. P. 159743 – 159750.
11. Goldsmid H. J. Bismuth telluride and its alloys as materials for thermoelectric generation // Mater. 2014. V. 7. P. 2577 – 2592.
12. Liu R., Tan X., Ren G. Enhanced thermoelectric performance of Te-doped Bi2Se3 – x bulks by self-propagating high-temperatures synthesis // Cryst. 2017. V. 7. P. 257 – 265.
13. CRC Handbook of Chemistry and Physics / ed. W. M. Haynes. 95thed. Boca Raton, FL: CRC Press, 2014. P. 4 – 48.
14. Lu R., Lopez J.S., Liu Y., et al. Coherent magnetic nanoinclusions induce charge localization in half-Heusler alloys leading to high Tc ferromagnetism and enhanced thermoelectric performance // J. Mater. Chem. A. 2019. V. 7. P. 1095 – 1103.
15. Ji X. H., Zhao X. B., Zhang Y. H., et al. Synthesis and properties of rare earth containing Bi2Te3 based thermoelectric alloys // J. Alloys Compd. 2005. V. 387. P. 282 – 286.
16. Goldsmid H. J., Sharp J. W. Estimation of the thermal band gap of a semiconductor from Seebeck measurements // J. Electron. Mater. 1999. V. 28. P. 869 – 872.
17. Snyder G. J. Figure of merit ZT of a thermo-electric device defined from materials properties // Energy Environ. Sci. 2017. V. 10. P. 2280 – 2283.
The article can be purchased
electronic!
PDF format
500 руб
DOI: 10.14489/glc.2023.02.pp.019-026
Article type:
Research Article
Make a request
