Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation
Bismuth telluride-based alloys are the most widely used commercial thermoelectric (TE) material for room temperature refrigeration. Here, we successfully shift up the optimum figure of merit of n-type bismuth-telluride-based TE materials for mid-temperature power generation. SbI3 doping is used to r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-09-01
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| Series: | Journal of Materiomics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847818300388 |
| _version_ | 1797724816591028224 |
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| author | Feng Li Renshuang Zhai Yehao Wu Zhaojun Xu Xinbing Zhao Tiejun Zhu |
| author_facet | Feng Li Renshuang Zhai Yehao Wu Zhaojun Xu Xinbing Zhao Tiejun Zhu |
| author_sort | Feng Li |
| collection | DOAJ |
| description | Bismuth telluride-based alloys are the most widely used commercial thermoelectric (TE) material for room temperature refrigeration. Here, we successfully shift up the optimum figure of merit of n-type bismuth-telluride-based TE materials for mid-temperature power generation. SbI3 doping is used to regulate the carrier concentration and Indium alloying to increase the bandgap, suppressing the detrimental bipolar conduction in the mid-temperature range. The lattice thermal conductivity is significantly reduced due to the multiscale microstructures induced via hot deformation. As a result, a peak zT of ∼1.1 was attained at 625 K for Bi1.85In0.15Te2Se + 0.25 wt% SbI3 alloy after hot deformation, showing a great application prospect of this alloy in mid-temperature TE power generation. Keywords: Bismuth telluride, Thermoelectric materials, Hot deformation, Alloying |
| first_indexed | 2024-03-12T10:22:15Z |
| format | Article |
| id | doaj.art-058edea9f8224ac98ed5b500c198992a |
| institution | Directory Open Access Journal |
| issn | 2352-8478 |
| language | English |
| last_indexed | 2024-03-12T10:22:15Z |
| publishDate | 2018-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj.art-058edea9f8224ac98ed5b500c198992a2023-09-02T09:58:03ZengElsevierJournal of Materiomics2352-84782018-09-0143208214Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generationFeng Li0Renshuang Zhai1Yehao Wu2Zhaojun Xu3Xinbing Zhao4Tiejun Zhu5State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaState Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaCorresponding author.; State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, ChinaBismuth telluride-based alloys are the most widely used commercial thermoelectric (TE) material for room temperature refrigeration. Here, we successfully shift up the optimum figure of merit of n-type bismuth-telluride-based TE materials for mid-temperature power generation. SbI3 doping is used to regulate the carrier concentration and Indium alloying to increase the bandgap, suppressing the detrimental bipolar conduction in the mid-temperature range. The lattice thermal conductivity is significantly reduced due to the multiscale microstructures induced via hot deformation. As a result, a peak zT of ∼1.1 was attained at 625 K for Bi1.85In0.15Te2Se + 0.25 wt% SbI3 alloy after hot deformation, showing a great application prospect of this alloy in mid-temperature TE power generation. Keywords: Bismuth telluride, Thermoelectric materials, Hot deformation, Alloyinghttp://www.sciencedirect.com/science/article/pii/S2352847818300388 |
| spellingShingle | Feng Li Renshuang Zhai Yehao Wu Zhaojun Xu Xinbing Zhao Tiejun Zhu Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation Journal of Materiomics |
| title | Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation |
| title_full | Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation |
| title_fullStr | Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation |
| title_full_unstemmed | Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation |
| title_short | Enhanced thermoelectric performance of n-type bismuth-telluride-based alloys via In alloying and hot deformation for mid-temperature power generation |
| title_sort | enhanced thermoelectric performance of n type bismuth telluride based alloys via in alloying and hot deformation for mid temperature power generation |
| url | http://www.sciencedirect.com/science/article/pii/S2352847818300388 |
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