Ru Alloying Induced Enhanced Thermoelectric Performance in FeSi2-Based Compounds
文献类型：期刊论文
| 作者 | Du, Xiaolong; Hu, Ping; Mao, Tao; Song, Qingfeng; Qiu, Pengfei; Shi, Xun; Chen, Lidong |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2019-09-04 |
| 卷号 | 11期号:35页码:32151 |
| 关键词 | thermoelectric beta-FeSi2 Ru alloying element diffusion lattice thermal conductivity |
| ISSN号 | 1944-8244 |
| DOI | 10.1021/acsami.9b10648 |
| 文献子类 | Article |
| 英文摘要 | beta-FeSi2 has been considered a promising material for thermoelectric applications, but its thermoelectric performance is greatly limited by the overhigh lattice thermal conductivity. In thermoelectrics, alloying an effective method to reduce the lattice thermal conductivity. In this study, we chose the Co-doped beta-FeSi2 (Fe0.94Co0.06Si2) as the matrix and then prepared a series of Ru alloyed Fe0.94-xRuxCo0.06Si2 (x = 0, 0.005, 0.01, 0.02, and 0.05). X-ray characterizations show that all samples crystallize in the beta-FeSi2 structure. The elemental mappings detect an inhomogeneous Ru distribution in Fe0.89Ru0.05Co0.06Si2, which is attributed to the different Ru solution contents in epsilon-FeSi and alpha-FeSi2+delta before the formation of beta-FeSi2 and the slow diffusion behavior of Ru during the annealing process. The Ru-alloying obviously reduces the lattice thermal conductivity via introducing the mass and strain field fluctuations to interrupt the phonon transports, while it has a weak effect on electrical transport properties. Finally, a maximum zT value of 0.33 at 900 K has been obtained for Fe0.89Ru0.05Co0.06Si2, which is about 27% higher than that for Fe0.94Co0.06Si2. |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.sic.ac.cn/handle/331005/26850]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Du, Xiaolong,Hu, Ping,Mao, Tao,et al. Ru Alloying Induced Enhanced Thermoelectric Performance in FeSi2-Based Compounds[J]. ACS APPLIED MATERIALS & INTERFACES,2019,11(35):32151. |
| APA | Du, Xiaolong.,Hu, Ping.,Mao, Tao.,Song, Qingfeng.,Qiu, Pengfei.,...&Chen, Lidong.(2019).Ru Alloying Induced Enhanced Thermoelectric Performance in FeSi2-Based Compounds.ACS APPLIED MATERIALS & INTERFACES,11(35),32151. |
| MLA | Du, Xiaolong,et al."Ru Alloying Induced Enhanced Thermoelectric Performance in FeSi2-Based Compounds".ACS APPLIED MATERIALS & INTERFACES 11.35(2019):32151. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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