Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites
Thermoelectric materials are highly promising for waste heat harvesting. Although thermoelectric materials research has expanded over the years, bismuth telluride-based alloys are still the best for near-room-temperature applications. In this work, a ≈38% enhancement of the average ZT (300-473 K) to...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/178843 |
| _version_ | 1826119531625447424 |
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| author | Tan, Xian Yi Dong, Jinfeng Liu, Jiawei Zhang, Danwei Solco, Samantha Faye Duran Sağlık, Kıvanç Jia, Ning You, Ivan Joel Wen Jie Chien, Sheau Wei Wang, Xizu Hu, Lei Luo, Yubo Zheng, Yun Soo, Debbie Xiang Yun Ji, Rong Goh, Ken Choon Hwa Jiang, Yilin Li, Jing-Feng Suwardi, Ady Zhu, Qiang Xu, Jianwei Yan, Qingyu |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Tan, Xian Yi Dong, Jinfeng Liu, Jiawei Zhang, Danwei Solco, Samantha Faye Duran Sağlık, Kıvanç Jia, Ning You, Ivan Joel Wen Jie Chien, Sheau Wei Wang, Xizu Hu, Lei Luo, Yubo Zheng, Yun Soo, Debbie Xiang Yun Ji, Rong Goh, Ken Choon Hwa Jiang, Yilin Li, Jing-Feng Suwardi, Ady Zhu, Qiang Xu, Jianwei Yan, Qingyu |
| author_sort | Tan, Xian Yi |
| collection | NTU |
| description | Thermoelectric materials are highly promising for waste heat harvesting. Although thermoelectric materials research has expanded over the years, bismuth telluride-based alloys are still the best for near-room-temperature applications. In this work, a ≈38% enhancement of the average ZT (300-473 K) to 1.21 is achieved by mixing Bi0.4Sb1.6Te3 with an emerging thermoelectric material Sb2Si2Te6, which is significantly higher than that of most BiySb2-yTe3-based composites. This enhancement is facilitated by the unique interface region between the Bi0.4Sb1.6Te3 matrix and Sb2Si2Te6-based precipitates with an orderly atomic arrangement, which promotes the transport of charge carriers with minimal scattering, overcoming a common factor that is limiting ZT enhancement in such composites. At the same time, high-density dislocations in the same region can effectively scatter the phonons, decoupling the electron-phonon transport. This results in a ≈56% enhancement of the thermoelectric quality factor at 373 K, from 0.41 for the pristine sample to 0.64 for the composite sample. A single-leg device is fabricated with a high efficiency of 5.4% at ΔT = 164 K further demonstrating the efficacy of the Sb2Si2Te6 compositing strategy and the importance of the precipitate-matrix interface microstructure in improving the performance of materials for relatively low-temperature applications. |
| first_indexed | 2024-10-01T05:01:32Z |
| format | Journal Article |
| id | ntu-10356/178843 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:01:32Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1788432024-07-12T15:44:31Z Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites Tan, Xian Yi Dong, Jinfeng Liu, Jiawei Zhang, Danwei Solco, Samantha Faye Duran Sağlık, Kıvanç Jia, Ning You, Ivan Joel Wen Jie Chien, Sheau Wei Wang, Xizu Hu, Lei Luo, Yubo Zheng, Yun Soo, Debbie Xiang Yun Ji, Rong Goh, Ken Choon Hwa Jiang, Yilin Li, Jing-Feng Suwardi, Ady Zhu, Qiang Xu, Jianwei Yan, Qingyu School of Materials Science and Engineering School of Chemistry, Chemical Engineering and Biotechnology Institute of Materials Research and Engineering, A*STAR Institute of Sustainability for Chemicals, Energy and Environment, A*STAR Engineering Antimony silicon telluride Bismuth antimony telluride Thermoelectric materials are highly promising for waste heat harvesting. Although thermoelectric materials research has expanded over the years, bismuth telluride-based alloys are still the best for near-room-temperature applications. In this work, a ≈38% enhancement of the average ZT (300-473 K) to 1.21 is achieved by mixing Bi0.4Sb1.6Te3 with an emerging thermoelectric material Sb2Si2Te6, which is significantly higher than that of most BiySb2-yTe3-based composites. This enhancement is facilitated by the unique interface region between the Bi0.4Sb1.6Te3 matrix and Sb2Si2Te6-based precipitates with an orderly atomic arrangement, which promotes the transport of charge carriers with minimal scattering, overcoming a common factor that is limiting ZT enhancement in such composites. At the same time, high-density dislocations in the same region can effectively scatter the phonons, decoupling the electron-phonon transport. This results in a ≈56% enhancement of the thermoelectric quality factor at 373 K, from 0.41 for the pristine sample to 0.64 for the composite sample. A single-leg device is fabricated with a high efficiency of 5.4% at ΔT = 164 K further demonstrating the efficacy of the Sb2Si2Te6 compositing strategy and the importance of the precipitate-matrix interface microstructure in improving the performance of materials for relatively low-temperature applications. Ministry of Education (MOE) Published version The authors acknowledge financial support from Science and Engineering Research Council Sustainable Hybrid Lighting System for Controlled Environment Agriculture programme: A19D9a0096. X.J.W. acknowledges financial support from Singapore A*STAR project SC25/21-102419. Q. Yan acknowledges funding from Singapore MOE ACRF Tier 1 under Grant No. RG128/21, RT6/22. A.S. acknowledges A*STAR’s Career Development Award C210112022. 2024-07-09T01:05:35Z 2024-07-09T01:05:35Z 2024 Journal Article Tan, X. Y., Dong, J., Liu, J., Zhang, D., Solco, S. F. D., Sağlık, K., Jia, N., You, I. J. W. J., Chien, S. W., Wang, X., Hu, L., Luo, Y., Zheng, Y., Soo, D. X. Y., Ji, R., Goh, K. C. H., Jiang, Y., Li, J., Suwardi, A., ...Yan, Q. (2024). Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites. Advanced Science, 11(23), e2400870-. https://dx.doi.org/10.1002/advs.202400870 2198-3844 https://hdl.handle.net/10356/178843 10.1002/advs.202400870 38553790 2-s2.0-85188909654 23 11 e2400870 en RG128/21 RT6/22 Advanced Science © 2024 The Authors. Advanced Science published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. application/pdf |
| spellingShingle | Engineering Antimony silicon telluride Bismuth antimony telluride Tan, Xian Yi Dong, Jinfeng Liu, Jiawei Zhang, Danwei Solco, Samantha Faye Duran Sağlık, Kıvanç Jia, Ning You, Ivan Joel Wen Jie Chien, Sheau Wei Wang, Xizu Hu, Lei Luo, Yubo Zheng, Yun Soo, Debbie Xiang Yun Ji, Rong Goh, Ken Choon Hwa Jiang, Yilin Li, Jing-Feng Suwardi, Ady Zhu, Qiang Xu, Jianwei Yan, Qingyu Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites |
| title | Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites |
| title_full | Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites |
| title_fullStr | Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites |
| title_full_unstemmed | Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites |
| title_short | Synergistic combination of Sb2Si2Te6 additives for enhanced average ZT and single-leg device efficiency of Bi0.4Sb1.6Te3-based composites |
| title_sort | synergistic combination of sb2si2te6 additives for enhanced average zt and single leg device efficiency of bi0 4sb1 6te3 based composites |
| topic | Engineering Antimony silicon telluride Bismuth antimony telluride |
| url | https://hdl.handle.net/10356/178843 |
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