Thermoelectricity of n-type MnBi4S7-7xSe7x solid solution
文献类型：期刊论文
| 作者 | Xi, Ming1; Zhu, Huaxing1; Wu, Hong1,4,5; Yang, Yibin1; Yan, Yanci1; Wang, Guoyu4,5 ; Wang, Guiwen2; Li, JiangYu3; Lu, Xu1; Zhou, Xiaoyuan1,2
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2020-09-15 |
| 卷号 | 396页码:9 |
| 关键词 | Eco-friendly Thermoelectric Low lattice thermal conductivity Anharmonicity n-type sulfides |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2020.125219 |
| 通讯作者 | Lu, Xu(luxu@cqu.edu.cn) ; Zhou, Xiaoyuan(xiaoyuan2013@cqu.edu.cn) |
| 英文摘要 | We report self-doped MnBi4S7-xSe7x solid solution as a novel n-type sulfide thermoelectric material with weak anisotropic transport properties. These compounds feature intrinsically low lattice thermal conductivity of 0.5-0.8 W m(-1)K(-1) in the temperature range of 300-800 K, which is well explained by strong lattice anharmonic vibration, mainly from Bi atoms as verified by theoretical calculations. Intentionally introduced sulfur deficiency acts as an efficient electron donor that enhances the electrical conductivity of MnBi4S7 while alloying with Se can promote electrical conductivity and further reduce thermal conductivity by 25% in the whole temperature region. As a result, the sample of with nominal composition of MnBi4S5.46Se1.4 shows a peak zT of similar to 0.31 at 770 K vertical to the pressing direction. |
| 资助项目 | National Natural Science Foundation of China[51772035] ; National Natural Science Foundation of China[11674040] ; National Natural Science Foundation of China[51672270] ; Fundamental Research Funds for the Central Universities[106112017CDJQJ308821] ; Fundamental Research Funds for the Central Universities[2018CDYJSY0055] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH016] ; Project for Fundamental and Frontier Research in Chongqing[CSTC2017JCYJAX0388] ; Shenzhen Science and Technology Innovation Committee[JCYJ20170818155752559] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000551969200049 |
| 出版者 | ELSEVIER SCIENCE SA |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/11284]  |
| 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, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, Chongqing 401331, Peoples R China 2.Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China 3.Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen Key Lab Nanobiomech, Shenzhen 518055, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100044, Peoples R China 5.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xi, Ming,Zhu, Huaxing,Wu, Hong,et al. Thermoelectricity of n-type MnBi4S7-7xSe7x solid solution[J]. CHEMICAL ENGINEERING JOURNAL,2020,396:9. |
| APA | Xi, Ming.,Zhu, Huaxing.,Wu, Hong.,Yang, Yibin.,Yan, Yanci.,...&Zhou, Xiaoyuan.(2020).Thermoelectricity of n-type MnBi4S7-7xSe7x solid solution.CHEMICAL ENGINEERING JOURNAL,396,9. |
| MLA | Xi, Ming,et al."Thermoelectricity of n-type MnBi4S7-7xSe7x solid solution".CHEMICAL ENGINEERING JOURNAL 396(2020):9. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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