Independently tuning the power factor and thermal conductivity of SnSe via Ag2S addition and nanostructuring
文献类型：期刊论文
| 作者 | Bao, Xinhe2; Mingo, Natalio1; Jiang, Peng2; Zhu, Yuanhu2; Carrete, Jesus3; Meng, Qing-Long2; Huang, Zhiwei2,4 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-05-07 |
| 卷号 | 6期号:17页码:7959-7966 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta00608c |
| 文献子类 | Article |
| 英文摘要 | Single-crystal SnSe has been reported to exhibit ultralow thermal conductivity and high thermoelectric performance. For future large-scale thermoelectric applications, however, polycrystalline SnSe would offer more advantages. Unfortunately, its thermoelectric figure of merit (ZT) is much poorer than that of single crystal. Improvements are challenging because the reduction in thermal conductivity is usually accompanied by a degradation in the power factor. Here we report how the thermal conductivity of polycrystalline SnSe can be reduced by Ag2S addition and nanostructuring while avoiding this downside. We investigated the thermoelectric properties of Ag2S-added SnSe polycrystals in the range from 300 to 773 K. We obtained a peak ZT of 0.88 in SnSe with 1% Ag2S addition (SS1), twice as high as pristine SnSe (SS). The thermal conductivity is depressed even further in a nanostructured SnSe + 0.01Ag(2)S sample (SS1-Nano). More importantly, at high temperature the power factor remains as high as that of the SS1 sample. Due to a minimum thermal conductivity of 0.30 W m (-1) K-1, we obtained a maximum ZT of 1.13 in the SS1-Nano sample at 773 K. |
| WOS关键词 | ENHANCED THERMOELECTRIC PERFORMANCE ; BOLTZMANN TRANSPORT-EQUATION ; POLYCRYSTALLINE SNSE ; BULK THERMOELECTRICS ; ELECTRONIC-STRUCTURE ; TEMPERATURE ; FIGURE ; MERIT ; CRYSTALS ; PHONONS |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000431621700071 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/167196]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Bao, Xinhe; Jiang, Peng |
| 作者单位 | 1.CEA Grenoble, 17 Rue Martyrs, F-38054 Grenoble, France 2.Chinese Acad Sci, Dalian Inst Chem Phys, CAS Ctr Excellence Nanosci, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.TU Wien, Inst Mat Chem, A-1060 Vienna, Austria 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Xinhe,Mingo, Natalio,Jiang, Peng,et al. Independently tuning the power factor and thermal conductivity of SnSe via Ag2S addition and nanostructuring[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(17):7959-7966. |
| APA | Bao, Xinhe.,Mingo, Natalio.,Jiang, Peng.,Zhu, Yuanhu.,Carrete, Jesus.,...&Huang, Zhiwei.(2018).Independently tuning the power factor and thermal conductivity of SnSe via Ag2S addition and nanostructuring.JOURNAL OF MATERIALS CHEMISTRY A,6(17),7959-7966. |
| MLA | Bao, Xinhe,et al."Independently tuning the power factor and thermal conductivity of SnSe via Ag2S addition and nanostructuring".JOURNAL OF MATERIALS CHEMISTRY A 6.17(2018):7959-7966. |
入库方式： OAI收割
来源：大连化学物理研究所
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