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Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering

Highly crystalline Bi(2)Te(3) based compounds with small grain size were successfully synthesized by flash sintering (FS) method in 10 s at room temperature under suitable current density using Bi, Te and Se powders. The instantaneously generated local Joule heat at grain boundary is regarded as the...

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Autores principales: Zhang, Zhiwei, Sun, Minna, Liu, Jinchao, Cao, Lili, Su, Mengran, Liao, Qingwei, Deng, Yuan, Qin, Lei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203520/
https://www.ncbi.nlm.nih.gov/pubmed/35710602
http://dx.doi.org/10.1038/s41598-022-14405-5
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author Zhang, Zhiwei
Sun, Minna
Liu, Jinchao
Cao, Lili
Su, Mengran
Liao, Qingwei
Deng, Yuan
Qin, Lei
author_facet Zhang, Zhiwei
Sun, Minna
Liu, Jinchao
Cao, Lili
Su, Mengran
Liao, Qingwei
Deng, Yuan
Qin, Lei
author_sort Zhang, Zhiwei
collection PubMed
description Highly crystalline Bi(2)Te(3) based compounds with small grain size were successfully synthesized by flash sintering (FS) method in 10 s at room temperature under suitable current density using Bi, Te and Se powders. The instantaneously generated local Joule heat at grain boundary is regarded as the main reason for the rapid completion of chemical reaction and crystallization. By combining FS synthesis method with spark plasma sintering (SPS), Bi(2)Te(3) based bulk materials with high relative density were fabricated in 10 min. Suitably prolonging sintering temperature and holding time in SPS process can decrease carrier concentration and phonon thermal conductivity, while increasing carrier mobility. Hence, the sample prepared at 753 K for 3 min shows 20% higher ZT value than that of the sample prepared at 723 K for 3 min. Compared with common zone melting or powder metallurgy methods taking several hours by complex operation, this method is time-saving and low cost.
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spelling pubmed-92035202022-06-18 Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering Zhang, Zhiwei Sun, Minna Liu, Jinchao Cao, Lili Su, Mengran Liao, Qingwei Deng, Yuan Qin, Lei Sci Rep Article Highly crystalline Bi(2)Te(3) based compounds with small grain size were successfully synthesized by flash sintering (FS) method in 10 s at room temperature under suitable current density using Bi, Te and Se powders. The instantaneously generated local Joule heat at grain boundary is regarded as the main reason for the rapid completion of chemical reaction and crystallization. By combining FS synthesis method with spark plasma sintering (SPS), Bi(2)Te(3) based bulk materials with high relative density were fabricated in 10 min. Suitably prolonging sintering temperature and holding time in SPS process can decrease carrier concentration and phonon thermal conductivity, while increasing carrier mobility. Hence, the sample prepared at 753 K for 3 min shows 20% higher ZT value than that of the sample prepared at 723 K for 3 min. Compared with common zone melting or powder metallurgy methods taking several hours by complex operation, this method is time-saving and low cost. Nature Publishing Group UK 2022-06-16 /pmc/articles/PMC9203520/ /pubmed/35710602 http://dx.doi.org/10.1038/s41598-022-14405-5 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhang, Zhiwei
Sun, Minna
Liu, Jinchao
Cao, Lili
Su, Mengran
Liao, Qingwei
Deng, Yuan
Qin, Lei
Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
title Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
title_full Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
title_fullStr Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
title_full_unstemmed Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
title_short Ultra-fast fabrication of Bi(2)Te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
title_sort ultra-fast fabrication of bi(2)te(3) based thermoelectric materials by flash-sintering at room temperature combining with spark plasma sintering
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203520/
https://www.ncbi.nlm.nih.gov/pubmed/35710602
http://dx.doi.org/10.1038/s41598-022-14405-5
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