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High thermoelectric performance of tellurium-free n-type AgBi1-xSbxSe2 with stable cubic structure enabled by entropy engineering

文献类型：期刊论文

作者Zhao, Ting2; Zhu, Huaxing2; Zhang, Bin4; Zheng, Sikang2,4; Li, Nanhai2,3; Wang, Guiwen4; Wang, Guoyu3; Lu, Xu1,2; Zhou, Xiaoyuan2,4
刊名ACTA MATERIALIA
出版日期2021-11-01
卷号220页码:10
ISSN号1359-6454
关键词Optimal entropy Cubic AgBi1-xSbxSe2 Suppression of phase transition Local structural distortion Thermoelectric performance
DOI10.1016/j.actamat.2021.117291
通讯作者Lu, Xu(luxu@cqu.edu.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要AgBiSe2 is a promising n-type compound with high thermoelectric performance but suffers from a multiple structural phase transition. Here, we show the high-temperature rock salt phase can be stabilized at ambient conditions in AgBi1-xSbxSe2 solid solutions with x higher than 0.2, which is attributed to the increased configurational entropy. Moreover, the optimum increment of configurational entropy is determined by analyzing the weighted mobility and quality factor. Finally, benefiting from the intrinsically low lattice thermal conductivity and well-maintained carrier mobility, a peak zT value of 0.86 at 790 K, is attained for cubic AgBi0.8Sb0.2Se2 after bromine doping. This work highlights the importance of entropy engineering in thermoelectric performance and phase stability, providing insights into the discovery and design of environmental-friendly thermoelectrics. (C) 2021 Published by Elsevier Ltd on behalf of Acta Materialia Inc.
资助项目National Natural Science Foundation of China[51772035 ,11674040] ; National Natural Science Foundation of China[11874356] ; National Natural Science Foundation of China[51877023] ; Fundamental Research Funds for the Central Universities[2019CDXYFXCS0006] ; Chongqing Entrepreneurship and Innovation Program for the Returned Overseas Chinese Scholars[cx2019002]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000706865100008
源URL[http://119.78.100.138/handle/2HOD01W0/14332]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Lu, Xu; Zhou, Xiaoyuan
作者单位1.Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400030, Peoples R China
2.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
4.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Ting,Zhu, Huaxing,Zhang, Bin,et al. High thermoelectric performance of tellurium-free n-type AgBi1-xSbxSe2 with stable cubic structure enabled by entropy engineering[J]. ACTA MATERIALIA,2021,220:10.
APA Zhao, Ting.,Zhu, Huaxing.,Zhang, Bin.,Zheng, Sikang.,Li, Nanhai.,...&Zhou, Xiaoyuan.(2021).High thermoelectric performance of tellurium-free n-type AgBi1-xSbxSe2 with stable cubic structure enabled by entropy engineering.ACTA MATERIALIA,220,10.
MLA Zhao, Ting,et al."High thermoelectric performance of tellurium-free n-type AgBi1-xSbxSe2 with stable cubic structure enabled by entropy engineering".ACTA MATERIALIA 220(2021):10.

入库方式： OAI收割

来源：重庆绿色智能技术研究院

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