Enhanced thermoelectric properties of YbZn2Sb2-xBix through a synergistic effect via Bi-doping
文献类型:期刊论文
作者 | Zhang, Xiong3,4,6; Gu, Haoshuang4; Zhang, Yu3; Guo, Lijie6; Yang, Juntao3; Luo, Shijun3; Lu, Xu6; Chen, Kansong4; Chai, Hongxiang1; Wang, Guoyu2 |
刊名 | CHEMICAL ENGINEERING JOURNAL |
出版日期 | 2019-10-15 |
卷号 | 374页码:589-595 |
ISSN号 | 1385-8947 |
关键词 | Zintl compounds Thermoelectric Fermi level Effective mass Callaway model |
DOI | 10.1016/j.cej.2019.05.206 |
通讯作者 | Wang, Guoyu(guoyuw@cigit.ac.cn) ; Zhang, Xiao(seashellemma@163.com) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn) |
英文摘要 | Recently, extensive research has been done to explore the potential thermoelectric performance of p-Type Zintl compounds AB(2)Sb(2) (A = Ca, Yb, Eu, Sr, Mg; B = Zn, Mn, Cd, Mg), mainly focus on A-site substitution and/or B-site substitution effect. Herein, we report that both power factors and thermal conductivities are simultaneously optimized to increase ZT values via substitution of Sb atoms with the isoelectronic Bi atoms in YbZn2Sb2-xBix compounds. We found that the power factor could be enhanced by 27%, as a result of improved electrical conductivities and the maintained Seebeck coefficients. The former is obtained from an increase of carrier density through a shift of Fermi level via Bi doping, which is supported by XPS analysis. The Seebeck coefficients are maintained due to the increased effective mass. Moreover, the lowest lattice thermal conductivity (0.47 Wm(-1) K-1 at 723K) is below the lattice thermal conductivity limit due to enhanced phonon scattering via Bi-doping, which is analyzed by the Callaway model. Benefiting from the synergistic effect, the ZT of Bi-doping samples are significantly enhanced compared with that of the pristine one. These results probably offer a synergistic strategy to enhance ZT for p-Type Zintl compounds AB(2)Sb(2) and other high-efficiency thermoelectric materials. |
资助项目 | National Natural Science Foundation of China[51672270] ; National Natural Science Foundation of China[51401202] ; National Natural Science Foundation of China[51472036] ; National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11604032] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[11874356] ; Fundamental Research Funds for the Central Universities[2018CDQYWL0048] ; Fundamental Research Funds for the Central Universities[2018CDPTCG0001/26] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Fundamental Research Funds for the Central Universities[2018CDJDWL0011] ; Natural Science Foundation of Hubei Provincial Department of Education[D20171803] |
WOS研究方向 | Engineering |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
WOS记录号 | WOS:000477652900053 |
源URL | [http://119.78.100.138/handle/2HOD01W0/8308] |
专题 | 中国科学院重庆绿色智能技术研究院 |
通讯作者 | Wang, Guoyu; Zhang, Xiao; Zhou, Xiaoyuan |
作者单位 | 1.Chongqing Univ, Sch Urban Construct & Environm Engn, Minist Educ, Key Lab Ecoenvironm Three Gorges Reservoir Reg, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 3.Hubei Univ Automot Technol, Shiyan 442002, Peoples R China 4.Hubei Univ, Lab Ferro & Piezoelectr Mat & Devices, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat H, Fac Phys & Elect,Sci, Wuhan 430062, Hubei, Peoples R China 5.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 6.Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Xiong,Gu, Haoshuang,Zhang, Yu,et al. Enhanced thermoelectric properties of YbZn2Sb2-xBix through a synergistic effect via Bi-doping[J]. CHEMICAL ENGINEERING JOURNAL,2019,374:589-595. |
APA | Zhang, Xiong.,Gu, Haoshuang.,Zhang, Yu.,Guo, Lijie.,Yang, Juntao.,...&Zhou, Xiaoyuan.(2019).Enhanced thermoelectric properties of YbZn2Sb2-xBix through a synergistic effect via Bi-doping.CHEMICAL ENGINEERING JOURNAL,374,589-595. |
MLA | Zhang, Xiong,et al."Enhanced thermoelectric properties of YbZn2Sb2-xBix through a synergistic effect via Bi-doping".CHEMICAL ENGINEERING JOURNAL 374(2019):589-595. |
入库方式: OAI收割
来源:重庆绿色智能技术研究院
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