Thermoelectric property enhancement in Yb-doped n-type skutterudites YbxCo4Sb12

被引：54

作者：

Dahal, Tulashi ^{[1
,2
]}

Jie, Qing ^{[1
,2
]}

Joshi, Giri ^{[3
]}

Chen, Shuo ^{[1
,2
]}

Guo, Chuanfei ^{[1
,2
]}

Lan, Yucheng ^{[1
,2
]}

Ren, Zhifeng ^{[1
,2
]}

机构：

[1] Univ Houston, Dept Phys, Houston, TX 77204 USA

[2] Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA

[3] GMZ Energy Inc, Waltham, MA 02453 USA

来源：

ACTA MATERIALIA | 2014年 / 75卷

关键词：

Thermoelectrics; Nanostructuring; Dimensionless figure-of-merit; TRANSPORT-PROPERTIES; HIGH FIGURE; PERFORMANCE; MERIT;

D O I：

10.1016/j.actamat.2014.05.019

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a study on the dimensionless thermoelectric figure-of-merit (ZT) of nanostructured YbxCo4Sb12 (x = 0.2, 0.35, 0.45. 0.5 and 0.6) made by hot pressing the nanopowder obtained from ball milling an ingot in comparison with that made directly from ball milling the elements. It was found that the electrical conductivity of the sample made from the ingot is higher and the thermal conductivity is lower compared to the sample made from directly ball milling the elements. It is believed that the higher electrical conductivity is due to the presence of fewer defects, while the lower thermal conductivity may be due to stronger phonon scattering from the different grain sizes. We have achieved a peak ZT of similar to 1.4 at 550 degrees C in Yb0.35Co4Sb12. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：316 / 321

页数：6

共 34 条

[1] Thermoelectric Properties of Triple-Filled BaxYbyInzCo4Sb12 Skutterudites [J].

Ballikaya, Sedat ;

Wang, Guoyu ;

Sun, Kai ;

Uher, Ctirad .

JOURNAL OF ELECTRONIC MATERIALS, 2011, 40 (05) :570-576

[2] Cooling, heating, generating power, and recovering waste heat with thermoelectric systems [J].

Bell, Lon E. .

SCIENCE, 2008, 321 (5895) :1457-1461

[3] High-performance bulk thermoelectrics with all-scale hierarchical architectures [J].

Biswas, Kanishka ;

He, Jiaqing ;

Blum, Ivan D. ;

Wu, Chun-I ;

Hogan, Timothy P. ;

Seidman, David N. ;

Dravid, Vinayak P. ;

Kanatzidis, Mercouri G. .

NATURE, 2012, 489 (7416) :414-418

[4] Anomalous barium filling fraction and n-type thermoelectric performance of BayCo4Sb12 [J].

Chen, LD ;

Kawahara, T ;

Tang, XF ;

Goto, T ;

Hirai, T ;

Dyck, JS ;

Chen, W ;

Uher, C .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (04) :1864-1868

[5] ELECTRONIC TRANSPORT IN SEMIMETALLIC CERIUM SULFIDE [J].

CUTLER, M ;

LEAVY, JF ;

FITZPATRICK, RL .

PHYSICAL REVIEW, 1964, 133 (4A) :1143-+

[6] New directions for low-dimensional thermoelectric materials [J].

Dresselhaus, Mildred S. ;

Chen, Gang ;

Tang, Ming Y. ;

Yang, Ronggui ;

Lee, Hohyun ;

Wang, Dezhi ;

Ren, Zhifeng ;

Fleurial, Jean-Pierre ;

Gogna, Pawan .

ADVANCED MATERIALS, 2007, 19 (08) :1043-1053

[7] High figure of merit in Ce-filled skutterudites [J].

Fleurial, JP ;

Borshchevsky, A ;

Caillat, T ;

Morelli, DT ;

Meisner, GP .

PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS, 1996, :91-95

[8] Solidification contraction-free synthesis for the Yb0.15Co4Sb12 bulk material [J].

Geng, H. Y. ;

Ochi, S. ;

Guo, J. Q. .

APPLIED PHYSICS LETTERS, 2007, 91 (02)

[9] High-Temperature Thermoelectric Properties of Co4Sb12-Based Skutterudites with Multiple Filler Atoms: Ce0.1InxYbyCo4Sb12 [J].

Graff, Jennifer ;

Zhu, Song ;

Holgate, Tim ;

Peng, Jiangying ;

He, Jian ;

Tritt, Terry M. .

JOURNAL OF ELECTRONIC MATERIALS, 2011, 40 (05) :696-701

[10] Effect of partial void filling on the transport properties of NdxCo4Sb12 skutterudites [J].

Kuznetsov, VL ;

Kuznetsova, LA ;

Rowe, DM .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2003, 15 (29) :5035-5048

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