Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides
Grain growth is a major issue in the preparation of nanostructured bismuth-antimony-tellurides during hot pressing the nanopowders into dense bulk samples. To prevent grain agglomeration during ball milling and growth during hot pressing, organic agent (Oleic Acid, OA) as additive was added into the...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier
2016
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| Online Access: | http://hdl.handle.net/1721.1/103945 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1826195260105031680 |
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| author | Zhang, Qian Zhang, Qinyong Chen, Shuo Liu, Weishu Lukas, Kevin Yan, Xiao Wang, Hengzhi Wang, Dezhi Opeil, Cyril Chen, Gang Ren, Zhifeng |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Zhang, Qian Zhang, Qinyong Chen, Shuo Liu, Weishu Lukas, Kevin Yan, Xiao Wang, Hengzhi Wang, Dezhi Opeil, Cyril Chen, Gang Ren, Zhifeng |
| author_sort | Zhang, Qian |
| collection | MIT |
| description | Grain growth is a major issue in the preparation of nanostructured bismuth-antimony-tellurides during hot pressing the nanopowders into dense bulk samples. To prevent grain agglomeration during ball milling and growth during hot pressing, organic agent (Oleic Acid, OA) as additive was added into the materials at the beginning of the ball milling process. With different concentrations of OA (0.5, 1.0, 1.5, 2.0, and 2.5 wt%), grains with different sizes are obtained. Structural analysis clearly shows that it is the particle size of the nanopowders that determines the final grain size in the densely compacted bulk samples. A combination of small grains ∼200–500 nm and nanopores leads to effective phonon scattering, which results in the decrease of lattice thermal conductivity, and ZT of ∼1.3 at 373 K for the sample with 2.0 wt% OA. |
| first_indexed | 2024-09-23T10:10:13Z |
| format | Article |
| id | mit-1721.1/103945 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:10:13Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1039452022-09-26T16:11:48Z Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides Zhang, Qian Zhang, Qinyong Chen, Shuo Liu, Weishu Lukas, Kevin Yan, Xiao Wang, Hengzhi Wang, Dezhi Opeil, Cyril Chen, Gang Ren, Zhifeng Massachusetts Institute of Technology. Department of Mechanical Engineering Chen, Gang Chen, Gang Grain growth is a major issue in the preparation of nanostructured bismuth-antimony-tellurides during hot pressing the nanopowders into dense bulk samples. To prevent grain agglomeration during ball milling and growth during hot pressing, organic agent (Oleic Acid, OA) as additive was added into the materials at the beginning of the ball milling process. With different concentrations of OA (0.5, 1.0, 1.5, 2.0, and 2.5 wt%), grains with different sizes are obtained. Structural analysis clearly shows that it is the particle size of the nanopowders that determines the final grain size in the densely compacted bulk samples. A combination of small grains ∼200–500 nm and nanopores leads to effective phonon scattering, which results in the decrease of lattice thermal conductivity, and ZT of ∼1.3 at 373 K for the sample with 2.0 wt% OA. United States. Dept. of Energy (S3TEC Energy Frontier Research Center, award number DE-SC0001299)) 2016-08-17T15:16:46Z 2016-08-17T15:16:46Z 2011-11 2011-09 Article http://purl.org/eprint/type/JournalArticle 22112855 http://hdl.handle.net/1721.1/103945 Zhang, Qian, Qinyong Zhang, Shuo Chen, Weishu Liu, Kevin Lukas, Xiao Yan, Hengzhi Wang, et al. “Suppression of Grain Growth by Additive in Nanostructured p-Type Bismuth Antimony Tellurides.” Nano Energy 1, no. 1 (January 2012): 183–189. https://orcid.org/0000-0002-3968-8530 en_US http://dx.doi.org/10.1016/j.nanoen.2011.10.006 Nano Energy Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Prof. Gang Chen |
| spellingShingle | Zhang, Qian Zhang, Qinyong Chen, Shuo Liu, Weishu Lukas, Kevin Yan, Xiao Wang, Hengzhi Wang, Dezhi Opeil, Cyril Chen, Gang Ren, Zhifeng Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides |
| title | Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides |
| title_full | Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides |
| title_fullStr | Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides |
| title_full_unstemmed | Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides |
| title_short | Suppression of grain growth by additive in nanostructured p-type bismuth antimony tellurides |
| title_sort | suppression of grain growth by additive in nanostructured p type bismuth antimony tellurides |
| url | http://hdl.handle.net/1721.1/103945 https://orcid.org/0000-0002-3968-8530 |
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