中国物理B ›› 2025, Vol. 34 ›› Issue (10): 107203-107203.doi: 10.1088/1674-1056/add503

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Realize high thermoelectric performance in both zone-melted ingots and powder-metallurgy bulks of Bi0.46Sb1.54Te3

Kai-Wen Zhao(赵凯雯), Meng-Yao Li(李梦瑶)†, Ying-Jiu Zhang(张迎九), and Hong-Zhang Song(宋红章)‡   

  1. Key Laboratory of Materials Physics of the Ministry of Education, School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University, Zhengzhou 450001, China
  • 收稿日期:2025-03-19 修回日期:2025-04-25 接受日期:2025-05-07 发布日期:2025-10-09
  • 通讯作者: Meng-Yao Li, Meng-Yao Li E-mail:limengyaorz@zzu.edu.cn;hzsong@zzu.edu.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant No. 2024YFE0105200), the China Postdoctoral Science Foundation (Grant No. 2023M743151), and the Natural Science Foundation of Henan Province, China (Grant No. 242300420304).

Realize high thermoelectric performance in both zone-melted ingots and powder-metallurgy bulks of Bi0.46Sb1.54Te3

Kai-Wen Zhao(赵凯雯), Meng-Yao Li(李梦瑶)†, Ying-Jiu Zhang(张迎九), and Hong-Zhang Song(宋红章)‡   

  1. Key Laboratory of Materials Physics of the Ministry of Education, School of Physics and Laboratory of Zhongyuan Light, Zhengzhou University, Zhengzhou 450001, China
  • Received:2025-03-19 Revised:2025-04-25 Accepted:2025-05-07 Published:2025-10-09
  • Contact: Meng-Yao Li, Meng-Yao Li E-mail:limengyaorz@zzu.edu.cn;hzsong@zzu.edu.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant No. 2024YFE0105200), the China Postdoctoral Science Foundation (Grant No. 2023M743151), and the Natural Science Foundation of Henan Province, China (Grant No. 242300420304).

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摘要： Bi(Sb)$_{2}$Te(Se)$_{3}$ alloys, as the only commercial thermoelectric materials, have been applied widely in cooling fields. While, the current energy conversion efficiency (dominated by the dimensionless ZT) of commercial products is still lower and cannot meet the market demand. In this paper, high thermoelectric performance at room temperature in both zone-melted (ZM) Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ ingots and powder-metallurgy (PM) Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ blocks with a large size was realized successfully by optimizing their preparation process. The peak ZT values of ZM and PM p-type Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ alloys reached 1.26 and 1.45, respectively. They are higher than those of all the n-type or p-type Bi$_{2}$Te$_{3}$-based products in current commercial applications. In particular, their production process of large size p-type Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ alloys could be directly industrialized.

关键词: thermoelectric, Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$, large size

Abstract: Bi(Sb)$_{2}$Te(Se)$_{3}$ alloys, as the only commercial thermoelectric materials, have been applied widely in cooling fields. While, the current energy conversion efficiency (dominated by the dimensionless ZT) of commercial products is still lower and cannot meet the market demand. In this paper, high thermoelectric performance at room temperature in both zone-melted (ZM) Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ ingots and powder-metallurgy (PM) Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ blocks with a large size was realized successfully by optimizing their preparation process. The peak ZT values of ZM and PM p-type Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ alloys reached 1.26 and 1.45, respectively. They are higher than those of all the n-type or p-type Bi$_{2}$Te$_{3}$-based products in current commercial applications. In particular, their production process of large size p-type Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$ alloys could be directly industrialized.

Key words: thermoelectric, Bi$_{0.46}$Sb$_{1.54}$Te$_{3}$, large size

中图分类号:  (Thermoelectric and thermomagnetic effects)

  • 72.15.Jf
81.20.Ev (Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)