Enhanced thermoelectric properties of P-type BiSbTe/TiO                         2                         –]Ag alloys

Fong Ren Sie; Chii Shyang Hwang; Chia Hung Kuo; Ya Wen Chou; Chien Hsuan Yeh

doi:10.1016/j.intermet.2019.03.001

Enhanced thermoelectric properties of P-type BiSbTe/TiO ₂ –]Ag alloys

Fong Ren Sie, Chii Shyang Hwang, Chia Hung Kuo, Ya Wen Chou, Chien Hsuan Yeh

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Bi _0.4 Sb _1.6 Te ₃ /TiO ₂ –]Ag nanocomposites were fabricated using a chemical plating method and then compacted via spark plasma sintering at 673 K and 50 MPa for 5 min. The effects of TiO ₂ –]Ag nanoparticles (NPs) dispersed into Bi _0.4 Sb _1.6 Te ₃ on the thermoelectric and mechanical properties were investigated. The results demonstrated that the carrier concentration and electrical conductivity increased by the incorporation of TiO ₂ –]Ag NPs. Moreover, the addition of TiO ₂ –]Ag NPs also changed the Fermi level positions and the maximum ZT could be obtained in the temperature range of 300–500 K. The maximum ZT value for a Bi _0.4 Sb _1.6 Te ₃ /TiO ₂ –]Ag (0.25 wt%) sample was 1.19 at 375 K due primarily to a significant increase in the power factor and an appropriate thermal conductivity. Consequently, the thermoelectric and mechanical properties were improved by embedding the TiO ₂ –]Ag NPs into the Bi _0.4 Sb _1.6 Te ₃ matrix.

Original language	English
Pages (from-to)	30-36
Number of pages	7
Journal	Intermetallics
Volume	109
DOIs	https://doi.org/10.1016/j.intermet.2019.03.001
Publication status	Published - 2019 Jun

All Science Journal Classification (ASJC) codes

Chemistry(all)
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.intermet.2019.03.001

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@article{eaa5f59c58b442a78eeb648f743c9b7c,

title = " Enhanced thermoelectric properties of P-type BiSbTe/TiO 2 –]Ag alloys ",

abstract = " Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag nanocomposites were fabricated using a chemical plating method and then compacted via spark plasma sintering at 673 K and 50 MPa for 5 min. The effects of TiO 2 –]Ag nanoparticles (NPs) dispersed into Bi 0.4 Sb 1.6 Te 3 on the thermoelectric and mechanical properties were investigated. The results demonstrated that the carrier concentration and electrical conductivity increased by the incorporation of TiO 2 –]Ag NPs. Moreover, the addition of TiO 2 –]Ag NPs also changed the Fermi level positions and the maximum ZT could be obtained in the temperature range of 300–500 K. The maximum ZT value for a Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag (0.25 wt%) sample was 1.19 at 375 K due primarily to a significant increase in the power factor and an appropriate thermal conductivity. Consequently, the thermoelectric and mechanical properties were improved by embedding the TiO 2 –]Ag NPs into the Bi 0.4 Sb 1.6 Te 3 matrix. ",

author = "Sie, {Fong Ren} and Hwang, {Chii Shyang} and Kuo, {Chia Hung} and Chou, {Ya Wen} and Yeh, {Chien Hsuan}",

note = "Funding Information: The authors would like to thank the Bureau of Energy, Ministry of Economic Affairs of the Republic of China , for financially supporting this work. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

year = "2019",

month = jun,

doi = "10.1016/j.intermet.2019.03.001",

language = "English",

volume = "109",

pages = "30--36",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Enhanced thermoelectric properties of P-type BiSbTe/TiO 2 –]Ag alloys

AU - Sie, Fong Ren

AU - Hwang, Chii Shyang

AU - Kuo, Chia Hung

AU - Chou, Ya Wen

AU - Yeh, Chien Hsuan

N1 - Funding Information: The authors would like to thank the Bureau of Energy, Ministry of Economic Affairs of the Republic of China , for financially supporting this work. Publisher Copyright: © 2019 Elsevier Ltd Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2019/6

Y1 - 2019/6

N2 - Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag nanocomposites were fabricated using a chemical plating method and then compacted via spark plasma sintering at 673 K and 50 MPa for 5 min. The effects of TiO 2 –]Ag nanoparticles (NPs) dispersed into Bi 0.4 Sb 1.6 Te 3 on the thermoelectric and mechanical properties were investigated. The results demonstrated that the carrier concentration and electrical conductivity increased by the incorporation of TiO 2 –]Ag NPs. Moreover, the addition of TiO 2 –]Ag NPs also changed the Fermi level positions and the maximum ZT could be obtained in the temperature range of 300–500 K. The maximum ZT value for a Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag (0.25 wt%) sample was 1.19 at 375 K due primarily to a significant increase in the power factor and an appropriate thermal conductivity. Consequently, the thermoelectric and mechanical properties were improved by embedding the TiO 2 –]Ag NPs into the Bi 0.4 Sb 1.6 Te 3 matrix.

AB - Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag nanocomposites were fabricated using a chemical plating method and then compacted via spark plasma sintering at 673 K and 50 MPa for 5 min. The effects of TiO 2 –]Ag nanoparticles (NPs) dispersed into Bi 0.4 Sb 1.6 Te 3 on the thermoelectric and mechanical properties were investigated. The results demonstrated that the carrier concentration and electrical conductivity increased by the incorporation of TiO 2 –]Ag NPs. Moreover, the addition of TiO 2 –]Ag NPs also changed the Fermi level positions and the maximum ZT could be obtained in the temperature range of 300–500 K. The maximum ZT value for a Bi 0.4 Sb 1.6 Te 3 /TiO 2 –]Ag (0.25 wt%) sample was 1.19 at 375 K due primarily to a significant increase in the power factor and an appropriate thermal conductivity. Consequently, the thermoelectric and mechanical properties were improved by embedding the TiO 2 –]Ag NPs into the Bi 0.4 Sb 1.6 Te 3 matrix.

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JO - Intermetallics

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Enhanced thermoelectric properties of P-type BiSbTe/TiO ₂ –]Ag alloys

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