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Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials
Thermoelectric modules, consisting of multiple pairs of n- and p-type legs, enable converting heat into electricity and vice versa. However, the thermoelectric performance is often asymmetrical, in that one type outperforms the other. In this paper, we identified the relationship between the asymmet...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6588382/ https://www.ncbi.nlm.nih.gov/pubmed/31245535 http://dx.doi.org/10.1126/sciadv.aav5813 |
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author | Zhu, Hangtian Mao, Jun Feng, Zhenzhen Sun, Jifeng Zhu, Qing Liu, Zihang Singh, David J. Wang, Yumei Ren, Zhifeng |
author_facet | Zhu, Hangtian Mao, Jun Feng, Zhenzhen Sun, Jifeng Zhu, Qing Liu, Zihang Singh, David J. Wang, Yumei Ren, Zhifeng |
author_sort | Zhu, Hangtian |
collection | PubMed |
description | Thermoelectric modules, consisting of multiple pairs of n- and p-type legs, enable converting heat into electricity and vice versa. However, the thermoelectric performance is often asymmetrical, in that one type outperforms the other. In this paper, we identified the relationship between the asymmetrical thermoelectric performance and the weighted mobility ratio, a correlation that can help predict the thermoelectric performance of unreported materials. Here, a reasonably high ZT for the n-type ZrCoBi-based half-Heuslers is first predicted and then experimentally verified. A high peak ZT of ~1 at 973 K can be realized by ZrCo(0.9)Ni(0.1)Bi(0.85)Sb(0.15). The measured heat-to-electricity conversion efficiency for the unicouple of ZrCoBi-based materials can be as high as ~10% at the cold-side temperature of ~303 K and at the hot-side temperature of ~983 K. Our work demonstrates that the ZrCoBi-based half-Heuslers are highly promising for the application of mid- and high-temperature thermoelectric power generation. |
format | Online Article Text |
id | pubmed-6588382 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-65883822019-06-26 Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials Zhu, Hangtian Mao, Jun Feng, Zhenzhen Sun, Jifeng Zhu, Qing Liu, Zihang Singh, David J. Wang, Yumei Ren, Zhifeng Sci Adv Research Articles Thermoelectric modules, consisting of multiple pairs of n- and p-type legs, enable converting heat into electricity and vice versa. However, the thermoelectric performance is often asymmetrical, in that one type outperforms the other. In this paper, we identified the relationship between the asymmetrical thermoelectric performance and the weighted mobility ratio, a correlation that can help predict the thermoelectric performance of unreported materials. Here, a reasonably high ZT for the n-type ZrCoBi-based half-Heuslers is first predicted and then experimentally verified. A high peak ZT of ~1 at 973 K can be realized by ZrCo(0.9)Ni(0.1)Bi(0.85)Sb(0.15). The measured heat-to-electricity conversion efficiency for the unicouple of ZrCoBi-based materials can be as high as ~10% at the cold-side temperature of ~303 K and at the hot-side temperature of ~983 K. Our work demonstrates that the ZrCoBi-based half-Heuslers are highly promising for the application of mid- and high-temperature thermoelectric power generation. American Association for the Advancement of Science 2019-06-21 /pmc/articles/PMC6588382/ /pubmed/31245535 http://dx.doi.org/10.1126/sciadv.aav5813 Text en Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Zhu, Hangtian Mao, Jun Feng, Zhenzhen Sun, Jifeng Zhu, Qing Liu, Zihang Singh, David J. Wang, Yumei Ren, Zhifeng Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
title | Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
title_full | Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
title_fullStr | Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
title_full_unstemmed | Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
title_short | Understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
title_sort | understanding the asymmetrical thermoelectric performance for discovering promising thermoelectric materials |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6588382/ https://www.ncbi.nlm.nih.gov/pubmed/31245535 http://dx.doi.org/10.1126/sciadv.aav5813 |
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