Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency
Thermoelectric materials are capable of converting waste heat into electricity. The dimensionless figure-of-merit (ZT), as the critical measure for the material's thermoelectric performance, plays a decisive role in the energy conversion efficiency. Half-Heusler materials, as one of the most pr...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
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Nature Publishing Group
2018
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| Online Access: | http://hdl.handle.net/1721.1/118903 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1826203995324022784 |
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| author | Zhu, Hangtian He, Ran Mao, Jun Zhu, Qing Sun, Jifeng Ren, Wuyang Wang, Yumei Liu, Zihang Tang, Zhongjia Sotnikov, Andrei Wang, Zhiming Broido, David Singh, David J. Ren, Zhifeng Liu, Chunhua Chen, Gang Nielsch, Kornelius |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Zhu, Hangtian He, Ran Mao, Jun Zhu, Qing Sun, Jifeng Ren, Wuyang Wang, Yumei Liu, Zihang Tang, Zhongjia Sotnikov, Andrei Wang, Zhiming Broido, David Singh, David J. Ren, Zhifeng Liu, Chunhua Chen, Gang Nielsch, Kornelius |
| author_sort | Zhu, Hangtian |
| collection | MIT |
| description | Thermoelectric materials are capable of converting waste heat into electricity. The dimensionless figure-of-merit (ZT), as the critical measure for the material's thermoelectric performance, plays a decisive role in the energy conversion efficiency. Half-Heusler materials, as one of the most promising candidates for thermoelectric power generation, have relatively low ZTs compared to other material systems. Here we report the discovery of p-type ZrCoBi-based half-Heuslers with a record-high ZT of ∼1.42 at 973 K and a high thermoelectric conversion efficiency of ∼9% at the temperature difference of ∼500 K. Such an outstanding thermoelectric performance originates from its unique band structure offering a high band degeneracy (Nv) of 10 in conjunction with a low thermal conductivity benefiting from the low mean sound velocity (vm∼2800 m s-1). Our work demonstrates that ZrCoBi-based half-Heuslers are promising candidates for high-temperature thermoelectric power generation. |
| first_indexed | 2024-09-23T12:47:10Z |
| format | Article |
| id | mit-1721.1/118903 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T12:47:10Z |
| publishDate | 2018 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/1189032022-10-01T11:06:44Z Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency Zhu, Hangtian He, Ran Mao, Jun Zhu, Qing Sun, Jifeng Ren, Wuyang Wang, Yumei Liu, Zihang Tang, Zhongjia Sotnikov, Andrei Wang, Zhiming Broido, David Singh, David J. Ren, Zhifeng Liu, Chunhua Chen, Gang Nielsch, Kornelius Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Liu, Chunhua Chen, Gang Nielsch, Kornelius Thermoelectric materials are capable of converting waste heat into electricity. The dimensionless figure-of-merit (ZT), as the critical measure for the material's thermoelectric performance, plays a decisive role in the energy conversion efficiency. Half-Heusler materials, as one of the most promising candidates for thermoelectric power generation, have relatively low ZTs compared to other material systems. Here we report the discovery of p-type ZrCoBi-based half-Heuslers with a record-high ZT of ∼1.42 at 973 K and a high thermoelectric conversion efficiency of ∼9% at the temperature difference of ∼500 K. Such an outstanding thermoelectric performance originates from its unique band structure offering a high band degeneracy (Nv) of 10 in conjunction with a low thermal conductivity benefiting from the low mean sound velocity (vm∼2800 m s-1). Our work demonstrates that ZrCoBi-based half-Heuslers are promising candidates for high-temperature thermoelectric power generation. United States. Department of Energy. Office of Science. Basic Energy Sciences (Award Number: DE-SC0001299) National Science Foundation (U.S.) (Grant No. 1402949) National Science Foundation (U.S.) (Grant No. 11474329) 2018-11-06T13:39:52Z 2018-11-06T13:39:52Z 2018-06 2018-10-10T14:15:01Z Article http://purl.org/eprint/type/JournalArticle 2041-1723 http://hdl.handle.net/1721.1/118903 Zhu, Hangtian, Ran He, Jun Mao, Qing Zhu, Chunhua Li, Jifeng Sun, Wuyang Ren, et al. “Discovery of ZrCoBi Based Half Heuslers with High Thermoelectric Conversion Efficiency.” Nature Communications 9, no. 1 (June 27, 2018). https://orcid.org/0000-0002-3968-8530 http://dx.doi.org/10.1038/s41467-018-04958-3 Nature Communications Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Nature Publishing Group Nature |
| spellingShingle | Zhu, Hangtian He, Ran Mao, Jun Zhu, Qing Sun, Jifeng Ren, Wuyang Wang, Yumei Liu, Zihang Tang, Zhongjia Sotnikov, Andrei Wang, Zhiming Broido, David Singh, David J. Ren, Zhifeng Liu, Chunhua Chen, Gang Nielsch, Kornelius Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency |
| title | Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency |
| title_full | Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency |
| title_fullStr | Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency |
| title_full_unstemmed | Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency |
| title_short | Discovery of ZrCoBi based half Heuslers with high thermoelectric conversion efficiency |
| title_sort | discovery of zrcobi based half heuslers with high thermoelectric conversion efficiency |
| url | http://hdl.handle.net/1721.1/118903 https://orcid.org/0000-0002-3968-8530 |
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