Thermoelectric properties of SmS@Y2O2S and Y2O2S@SmS compounds with a core-shell nanostructure

Thermoelectric properties of SmS@Y2O2S and Y2O2S@SmS compounds with a core-shell nanostructure Full article

Journal

Chemical Physics Letters
ISSN: 0009-2614 , E-ISSN: 1873-4448

Output data

Year: 2022, Volume: 809, Article number : 140157, Pages count : 6 DOI: 10.1016/j.cplett.2022.140157

Tags

Thermoelectric propertiesLanthanidesLanthanide sulfidesLanthanide oxidesSol-gel synthesisCore-shellTopological reactions

Authors

Sotnikov A.V. ¹ , Bakovets V.V. ¹ , Korotaev E.V. ¹ , Syrokvashin M.M. ¹ , Agazhanov A.Sh. ² , Pishchur D.P. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2	Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

The Seebeck coefficient, the electrical resistivity, the total thermal conductivity and the thermoelectric figure of merit of Y2O2S@SmS and SmS@Y2O2S ceramic samples with core-shell nanostructure within the temperature range from 300 to 770 K was studied. It was found that the samples studied demonstrate a promising thermoelectric property in high temperature region (T ≥ 773 K). The thermoelectric parameters for SmS@Y2O2S of S = –30 µV/K, ρ = 0.53 µΩ·m and κtot = 2.60 W/m·K at T = 773 K were measured. These values result in increased ZT value of 0.48 at T = 773 K in comparison with those for lanthanide-based thermoelectric materials.

Sotnikov A.V. , Bakovets V.V. , Korotaev E.V. , Syrokvashin M.M. , Agazhanov A.S. , Pishchur D.P.
Thermoelectric properties of SmS@Y2O2S and Y2O2S@SmS compounds with a core-shell nanostructure
Chemical Physics Letters. 2022. V.809. 140157 :1-6. DOI: 10.1016/j.cplett.2022.140157 WOS Scopus РИНЦ OpenAlex

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