中国物理B ›› 2018, Vol. 27 ›› Issue (4): 47203-047203.doi: 10.1088/1674-1056/27/4/047203

所属专题： SPECIAL TOPIC — Recent advances in thermoelectric materials and devices

• TOPIC REVIEW—Thermal and thermoelectric properties of nano materials • 上一篇    下一篇

Synthesis and thermoelectric properties of Nd-single filled p-type skutterudites

Hong Wu(吴宏), Nusrat Shaheen, Heng-Quan Yang(杨恒全), Kun-Ling Peng(彭坤岭), Xing-Chen Shen(沈星辰), Guo-Yu Wang(王国玉), Xu Lu(卢旭), Xiao-Yuan Zhou(周小元)   

  1. 1. Department of Applied Physics, Chongqing University, Chongqing 400044, China;
    2. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
  • 收稿日期:2017-09-02 修回日期:2017-10-05 出版日期:2018-04-05 发布日期:2018-04-05
  • 通讯作者: Xiao-Yuan Zhou E-mail:xiaoyuan2013@cqu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11674040, 11404044, 51472036, 51672270, and 51401202), the Fundamental Research Funds for the Central Universities (Grant No. 106112016CDJZR308808), the 100 Talent Program of the Chinese Academy of Sciences (Grant No. 2013-46), and the Project for Fundamental and Frontier Research in Chongqing, China (Grant No. CSTC2015JCYJBX0026).

Synthesis and thermoelectric properties of Nd-single filled p-type skutterudites

Hong Wu(吴宏)1,2, Nusrat Shaheen1, Heng-Quan Yang(杨恒全)1, Kun-Ling Peng(彭坤岭)1,2, Xing-Chen Shen(沈星辰)1,2, Guo-Yu Wang(王国玉)2, Xu Lu(卢旭)1, Xiao-Yuan Zhou(周小元)1   

  1. 1. Department of Applied Physics, Chongqing University, Chongqing 400044, China;
    2. Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
  • Received:2017-09-02 Revised:2017-10-05 Online:2018-04-05 Published:2018-04-05
  • Contact: Xiao-Yuan Zhou E-mail:xiaoyuan2013@cqu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11674040, 11404044, 51472036, 51672270, and 51401202), the Fundamental Research Funds for the Central Universities (Grant No. 106112016CDJZR308808), the 100 Talent Program of the Chinese Academy of Sciences (Grant No. 2013-46), and the Project for Fundamental and Frontier Research in Chongqing, China (Grant No. CSTC2015JCYJBX0026).

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摘要：

We report the synthesis of Nd-filled and Fe substituted p-type NdxFe3.2Co0.8Sb12 (x=0.5, 0.6, 0.7, 0.8, and 0.9) skutterudites by the solid-state reaction method. The influences of Nd filler on the electrical and thermal transport properties are investigated in a temperature range from room temperature to 850 K. A lowest lattice thermal conductivity of 0.88 W·m-1·K-1 is obtained in Nd0.8Fe3.2Co0.8Sb12 at 673 K, which results from the localized vibration modes of fillers and the increase of grains boundaries. Meanwhile, the maximum power factor is 2.77 mW·m-1·K-2 for the Nd0.9Fe3.2Co0.8Sb12 sample at 668 K. Overall, the highest dimensionless figure of merit zT=0.87 is achieved at 714 K for Nd0.9Fe3.2Co0.8Sb12.

关键词: thermoelectric, p-type skutterudites, neodymium filler, lattice thermal conductivity

Abstract:

We report the synthesis of Nd-filled and Fe substituted p-type NdxFe3.2Co0.8Sb12 (x=0.5, 0.6, 0.7, 0.8, and 0.9) skutterudites by the solid-state reaction method. The influences of Nd filler on the electrical and thermal transport properties are investigated in a temperature range from room temperature to 850 K. A lowest lattice thermal conductivity of 0.88 W·m-1·K-1 is obtained in Nd0.8Fe3.2Co0.8Sb12 at 673 K, which results from the localized vibration modes of fillers and the increase of grains boundaries. Meanwhile, the maximum power factor is 2.77 mW·m-1·K-2 for the Nd0.9Fe3.2Co0.8Sb12 sample at 668 K. Overall, the highest dimensionless figure of merit zT=0.87 is achieved at 714 K for Nd0.9Fe3.2Co0.8Sb12.

Key words: thermoelectric, p-type skutterudites, neodymium filler, lattice thermal conductivity

中图分类号:  (Thermoelectric and thermomagnetic effects)

  • 72.15.Jf
74.25.fg (Thermoelectric effects) 74.25.fc (Electric and thermal conductivity) 74.25.F- (Transport properties)