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High Thermoelectric Performance in Sulfide-Type Argyrodites Compound Ag8Sn(S1-xSex)(6) Enabled by Ultralow Lattice Thermal Conductivity and Extended Cubic Phase Regime

文献类型：期刊论文

作者Shen, Xingchen1,7,8; Xia, Yi6; Yang, Chun-Chuen5; Zhang, Zhao4; Li, Shulong3; Tung, Yung-Hsiang5; Benton, Allen1; Zhang, Xiao7; Lu, Xu7; Wang, Guoyu2,8
刊名ADVANCED FUNCTIONAL MATERIALS
出版日期2020-04-02
页码10
关键词Ag8SnS6 lattice dynamics phase transition thermal transport thermoelectric
ISSN号1616-301X
DOI10.1002/adfm.202000526
通讯作者Wang, Guoyu(guoyuw@cigit.ac.cn) ; He, Jian(jianhe@g.clemson.edu) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn)
英文摘要Argyrodites with a general chemical formula of A(8)BC(6) are known for complex phase transitions, ultralow lattice thermal conductivity, and mixed electronic and ionic conduction. The coexistence of ionic conduction and promising thermoelectric performance have recently been reported in selenide and telluride argyrodites, but scarcely in sulfide argyrodites. Here, the thermoelectric properties of Ag8Sn(S1-xSex)(6) are reported. Specifically, Ag8SnS6 exhibits intrinsically ultralow lattice thermal conductivities of 0.61-0.31 W m(-1) K-1 over the whole temperature range from 32 to 773 K due to distorted local crystal structure, relatively weak chemical bonding, rattler-like Ag atoms, low-lying optical modes, and dynamic disorder of Ag ions at high temperatures. Se doping shifts the orthorhombic-cubic phase transition from 457 K at x = 0 to 430 K at x = 0.10, thereby expanding the temperature range of the thermoelectrically favored cubic phase. A figure of merit zT value approximate to 0.80 is achieved at 773 K in Ag8Sn(S1-xSex)(6) (x = 0.03), the highest zT value reported in sulfide argyrodites. These results fill a knowledge gap of the thermoelectric study of argyrodites and contribute to a comprehensive understanding of the chemical bonding, lattice dynamics, and thermal transport of argyrodites.
资助项目Graduate Scientific Research and Innovation Foundation of Chongqing, China[CYB 19064] ; National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51472036] ; National Natural Science Foundation of China[51672270] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016] ; CSC scholarship[201806050180] ; ITS Summer Fellowship
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000523202300001
出版者WILEY-V C H VERLAG GMBH
源URL[http://119.78.100.138/handle/2HOD01W0/10773]  
专题中国科学院重庆绿色智能技术研究院
通讯作者Wang, Guoyu; He, Jian; Zhou, Xiaoyuan
作者单位1.Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
2.Univ Chinese Acad Sci, Beijing 100044, Peoples R China
3.Southwest Jiaotong Univ, Key Lab Magnet Levitat Technol & Maglev Trains, Minist Educ, Superconduct & New Energy R&D Ctr, Chengdu 610031, Peoples R China
4.Clemson Univ, Dept Mat & Engn, Clemson, SC 29634 USA
5.Chun Yuan Christian Univ, Dept Phys, Taoyuan 32023, Taiwan
6.Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
7.Chongqing Univ, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China
8.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Shen, Xingchen,Xia, Yi,Yang, Chun-Chuen,et al. High Thermoelectric Performance in Sulfide-Type Argyrodites Compound Ag8Sn(S1-xSex)(6) Enabled by Ultralow Lattice Thermal Conductivity and Extended Cubic Phase Regime[J]. ADVANCED FUNCTIONAL MATERIALS,2020:10.
APA Shen, Xingchen.,Xia, Yi.,Yang, Chun-Chuen.,Zhang, Zhao.,Li, Shulong.,...&Zhou, Xiaoyuan.(2020).High Thermoelectric Performance in Sulfide-Type Argyrodites Compound Ag8Sn(S1-xSex)(6) Enabled by Ultralow Lattice Thermal Conductivity and Extended Cubic Phase Regime.ADVANCED FUNCTIONAL MATERIALS,10.
MLA Shen, Xingchen,et al."High Thermoelectric Performance in Sulfide-Type Argyrodites Compound Ag8Sn(S1-xSex)(6) Enabled by Ultralow Lattice Thermal Conductivity and Extended Cubic Phase Regime".ADVANCED FUNCTIONAL MATERIALS (2020):10.

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来源：重庆绿色智能技术研究院

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