Rapid preparation of Ge0.9Sb0.1Te1+x via unique melt spinning: Hierarchical microstructure and improved thermoelectric performance | |
Tan, Huan1; Zhang, Bin2; Wang, Guoyu3,4; Chen, Yongjin5,6; Shen, Xingchen1,3,4; Guo, Lijie1; Han, Xiaodong5,6; Lu, Xu1; Zhou, Xiaoyuan1,2 | |
刊名 | JOURNAL OF ALLOYS AND COMPOUNDS |
2019-02-05 | |
卷号 | 774页码:129-136 |
关键词 | Gete Hierarchical Microstructure Rapid Fabrication Thermal Conductivity Thermoelectric Properties |
ISSN号 | 0925-8388 |
DOI | 10.1016/j.jallcom.2018.09.144 |
英文摘要 | Thermoelectric semiconductors based on GeTe has been proved to be an important materials for converting waste heat into electricity. In this study, we demonstrate an enhancement of thermoelectric performance for p-type Ge0.9Sb0.1Te1+x by a unique melt spinning method combined with hot pressing (MS-HP), through which increased Seebeck coefficients and reduced thermal conductivities are achieved simultaneously. Moreover, the MS technique greatly gives rise to a variety of microstructures, such as the fine Ge precipitates, twins and nano-domains, all of which contribute to the significantly reduced thermal conductivities. Finally, the Ge0.9Sb0.1Te1.03 reaches a maximum zT value of similar to 1.9 at 760 K and a giant average zT of similar to 1.2 between 300 K and 820 K, which is comparable to the reported results for GeTe based materials. Combined with the rapid fabrication, Ge-0.9Sb0.1Te1+x prepared by melt spinning process is an attractive p-type material for thermoelectric power generation application. (C) 2018 Published by Elsevier B.V. |
资助项目 | National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51472036] ; National Natural Science Foundation of China[51672270] ; National Natural Science Foundation of China[51772035] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2015JCYJBX0026] |
WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000449743600015 |
内容类型 | 期刊论文 |
源URL | [http://119.78.100.138/handle/2HOD01W0/7002] |
专题 | 中国科学院重庆绿色智能技术研究院 |
作者单位 | 1.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 400044, Peoples R China 2.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 4.China & Univ Chinese Acad Sci, Beijing 100044, Peoples R China 5.Beijing Univ Technol, Beijing Key Lab, Beijing 100124, Peoples R China 6.Beijing Univ Technol, Inst Microstruct & Property Adv Mat, Beijing 100124, Peoples R China |
推荐引用方式 GB/T 7714 | Tan, Huan,Zhang, Bin,Wang, Guoyu,et al. Rapid preparation of Ge0.9Sb0.1Te1+x via unique melt spinning: Hierarchical microstructure and improved thermoelectric performance[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,774:129-136. |
APA | Tan, Huan.,Zhang, Bin.,Wang, Guoyu.,Chen, Yongjin.,Shen, Xingchen.,...&Zhou, Xiaoyuan.(2019).Rapid preparation of Ge0.9Sb0.1Te1+x via unique melt spinning: Hierarchical microstructure and improved thermoelectric performance.JOURNAL OF ALLOYS AND COMPOUNDS,774,129-136. |
MLA | Tan, Huan,et al."Rapid preparation of Ge0.9Sb0.1Te1+x via unique melt spinning: Hierarchical microstructure and improved thermoelectric performance".JOURNAL OF ALLOYS AND COMPOUNDS 774(2019):129-136. |
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