High-performance eco-friendly MnTe thermoelectrics through introducing SnTe nanocrystals and manipulating band structure
文献类型：期刊论文
| 作者 | Deng, Houquan1; Lou, Xunuo1; Lu, Wenqi1; Zhang, Jian5 ; Li, Di5; Li, Shuang1; Zhang, Qingtang1; Zhang, Xuemei4,5; Chen, Xiang3; Zhang, Dewei2
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| 刊名 | NANO ENERGY
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 81 |
| 关键词 | MnTe Band convergence Nanocrystals Thermoelectric Materials SnTe |
| ISSN号 | 2211-2855 |
| DOI | 10.1016/j.nanoen.2020.105649 |
| 通讯作者 | Zhang, Yongsheng(yshzhang@theory.issp.ac.cn) ; Tang, Guodong(tangguodong@njust.edu.cn) |
| 英文摘要 | MnTe, which is comprised of earth-abundant and environmentally friendly elements, shows great potential for waste heat recovery in the moderate temperature range. However, its low carrier concentration limits its thermoelectric performance. Here, we achieved ultrahigh thermoelectric performance of MnTe by manipulating band structure and introducing SnTe nanocrystals. We found that incorporation of SnTe exerts a high band convergence in the electronic structure of MnTe, leading to remarkable enhancement of Seebeck coefficient. The Seebeck coefficient was greatly enhanced compared with previously reported doped MnTe. Furthermore, the carrier concentration can be optimized simultaneously by introducing SnTe. The large Seebeck coefficient combined with increased electrical conductivity give rise to high power factor similar to 1230 mu Wm(-1) K-2. Meanwhile, SnTe nanocrystals help to achieve highly effective phonon scattering leading to markedly reduced lattice thermal conductivity. The proposed novel strategy decouples electron and phonon transport of MnTe, contributing to a record high ZT of similar to 1.4 at 873 K for the Mn1.06Te-2% SnTe material. Our finding promotes MnTe-based materials as a robust candidate for waste heat recovery at medium temperature. |
| 资助项目 | National Natural Science Foundation of China[52071182] ; National Natural Science Foundation of China[U1732153] ; National Natural Science Foundation of China[11774347] ; Qinglan Project of the Young and Middle-aged Academic Leader of Jiangsu Province |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000639191300028 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Qinglan Project of the Young and Middle-aged Academic Leader of Jiangsu Province |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/121795]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Yongsheng; Tang, Guodong |
| 作者单位 | 1.Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, MIIT Key Lab Adv Metall & Intermetall Mat Technol, Nanjing 210094, Peoples R China 2.Yancheng Inst Technol, Sch Mat Sci & Engn, Yancheng 221051, Jiangsu, Peoples R China 3.Nanjing Univ Sci & Technol, Nano & Heterogeneous Mat Ctr, Sch Mat Sci & Engn, Nanjing 210094, Peoples R China 4.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China 5.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Houquan,Lou, Xunuo,Lu, Wenqi,et al. High-performance eco-friendly MnTe thermoelectrics through introducing SnTe nanocrystals and manipulating band structure[J]. NANO ENERGY,2021,81. |
| APA | Deng, Houquan.,Lou, Xunuo.,Lu, Wenqi.,Zhang, Jian.,Li, Di.,...&Tang, Guodong.(2021).High-performance eco-friendly MnTe thermoelectrics through introducing SnTe nanocrystals and manipulating band structure.NANO ENERGY,81. |
| MLA | Deng, Houquan,et al."High-performance eco-friendly MnTe thermoelectrics through introducing SnTe nanocrystals and manipulating band structure".NANO ENERGY 81(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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