| Effect of Y（Yttrium） Filling Fraction on Thermoelectric Properties of p-type Yy Fex Co4-x Sb12 |
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| 作者姓名： | TANG Xinfeng SONG Bo ZHANG Qingjie |
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| 作者单位： | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
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| 摘 要： | Yttrium-filled sku, tterudites Yy Fex Co4-x Sb12
（ Y =0- 0. 40 ） were synthesized. The effect of Y filling fraction on thermoelectric properties of Yy Fex Co4-x Sb12
was investigated. All samples showed p-type conduct. The electrical conductivity decreased with increasing filling fraction y. The Seebeck coefficient inreased with increasing temperature. The lattice thermal conductivity decreased with increasing filling fraction y and showed the minimum value at a certain filling fraction y = 0.3. The effect of different filling atoms M（ M： Ba, Ce, Y） on the lattice thermal conductivity of MyFexCo4-xSb12 was discussed. The maximum ZT value of O. 7 was obtained for Y0.06 Fe0.7 Co3.3 Sb12 at 750 K.
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| 关 键 词： | 热电性 P形 电导率 系数 工程材料学 |
| 收稿时间： | 2005-03-12 |
| 修稿时间： | 2006-02-05 |
Effect of Y (yttrium) filling fraction on thermoelectric properties ofp-type Y
y
Fe
x
Co4?x
Sb12 |
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| TANG Xinfeng SONG Bo ZHANG Qingjie.Effect of Y (yttrium) filling fraction on thermoelectric properties ofp-type Y
y
Fe
x
Co4?x
Sb12[J].Journal of Wuhan University of Technology. Materials Science Edition,2006,21(4):64-67. |
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| Authors: | Tang Xinfeng Ph D Song Bo Zhang Qingjie |
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| Affiliation: | (1) State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070 Wuhan, China |
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| Abstract: | Yttrium-filled skutterudites Y_yFe_xCo_ 4-x Sb_ 12 (y=0-0.40 )were synthesized. The effect of Y filling fraction on thermoelectric properties of Y_yFe_xCo_ 4-x Sb_ 12 was investigated. All samples showed p-type conduct. The electrical conductivity decreased with increasing filling fraction y. The Seebeck coefficient increased with increasing temperature. The lattice thermal conductivity decreased with increasing filling fraction y and showed the minimum value at a certain filling fraction y = 0.3. The effect of different filling atoms M(M: Ba,Ce,Y) on the lattice thermal conductivity of M_yFe_xCo_ 4-x Sb_ 12 was discussed. The maximum ZT value of 0.7 was obtained for Y_ 0.08 Fe_ 0.7 Co_ 3.3 Sb_12 at 750 K. |
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| Keywords: | filled skutterudite compound filled fraction thermoelectric properties |
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