Ultralow thermal conductivity and improved ZT of CuInTe2 by high-entropy structure design
文献类型：期刊论文
| 作者 | Cai, Jianfeng; Yang, Junxuan; Liu, Guoqiang; Wang, Hongxiang; Shi, Fanfan; Tan, Xiaojian; Ge, Zhenhua; Jiang, Jun |
| 刊名 | MATERIALS TODAY PHYSICS
 |
| 出版日期 | 2021 |
| 卷号 | 18 |
| 关键词 | HIGH THERMOELECTRIC PERFORMANCE ALLOYS |
| 英文摘要 | Entropy engineering has been widely applied to thermoelectrics as an effective strategy to reduce thermal conductivity. On the other hand,the increase of configuration entropy certainly decreases the electrical conductivity simultaneously, leading to the worsening of the thermoelectric performance. In this paper, we report a study on the high entropy structure design for chalcogenide CuInTe2. Based on the analysis of electronic band structure, we show how to optimize the constituents of high-entropy compound to relieve the influence on electrical conductivity. Compared with (CuAg)(0.5)(ZnGeGaIn)(0.25)Te-2, which has the highest configuration entropy among our samples, the optimized constituents of Cu0.8Ag0.2(ZnGe)(0.1)(GaIn)(0.4)Te-2 shows the one order higher carrier mobility and little bit higher thermal conductivity. Finally, the highest ZT of 1.02 at 820 K is obtained in Cu0.8Ag0.2(ZnGe)(0.1)(GaIn)(0.4)Te-2, accompanying with a very low thermal conductivity of 0.5 Wm(-1)K(-1). This work provides a successful example of the high-entropy structure design for thermoelectrics, and it indicates that to reconcile the different requirements of thermal conductivity and electrical conductivity is crucial. (C) 2021 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21952]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Liu, GQ 2.Ge, ZH (corresponding author), Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China. 3.Jiang, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Cai, Jianfeng,Yang, Junxuan,Liu, Guoqiang,et al. Ultralow thermal conductivity and improved ZT of CuInTe2 by high-entropy structure design[J]. MATERIALS TODAY PHYSICS,2021,18. |
| APA | Cai, Jianfeng.,Yang, Junxuan.,Liu, Guoqiang.,Wang, Hongxiang.,Shi, Fanfan.,...&Jiang, Jun.(2021).Ultralow thermal conductivity and improved ZT of CuInTe2 by high-entropy structure design.MATERIALS TODAY PHYSICS,18. |
| MLA | Cai, Jianfeng,et al."Ultralow thermal conductivity and improved ZT of CuInTe2 by high-entropy structure design".MATERIALS TODAY PHYSICS 18(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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