High pressure synthesized Ca-filled CoSb3 skutterudites with enhanced thermoelectric properties

被引：50

作者：

Li, Xiaohui ^{[1
]}

Zhang, Qian ^{[1
]}

Kang, Yulong ^{[1
]}

Chen, Chen ^{[1
]}

Zhang, Long ^{[1
]}

Yu, Dongli ^{[1
]}

Tian, Yongjun ^{[1
]}

Xu, Bo ^{[1
]}

机构：

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 677卷

基金：

美国国家科学基金会;

关键词：

Skutterudites; High pressure synthesis; Thermoelectric properties; LATTICE THERMAL-CONDUCTIVITY; N-TYPE SKUTTERUDITES; TRANSPORT-PROPERTIES; PERFORMANCE;

D O I：

10.1016/j.jallcom.2016.03.239

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ca-filled CoSb3 skutterudites were synthesized under high pressure. The structural, electrical, and thermoelectric properties were investigated. CaxCo4Sb12 samples show the skutterudite structure of Im (3) over bar symmetry. The maximum filling fraction of calcium was substantially increased in the high-pressure synthesized samples compared with the ambient-pressure synthesized samples. As a result, the power factor was greatly increased and a maximal PF value of ca. 5400 mu W m(-1) K-2 was reached in Ca0.31Co4Sb12. The highest ZT of 1.15 was achieved in the optimal Ca0.31Co4Sb12 at 840 K. Compared with the traditional solid state reaction method, high pressure synthesis can substantially shorten the reaction duration and extend fillable elements (or increase filling fraction), thus provide us an effective pathway for thermoelectric materials fabrication. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：61 / 65

页数：5

共 35 条

[1] High-pressure synthesis, characterization, and tuning of solid state materials [J].

Badding, JV .

ANNUAL REVIEW OF MATERIALS SCIENCE, 1998, 28 :631-658

[2] High-pressure synthesized materials: treasures and hints [J].

Brazhkin, V. V. .

HIGH PRESSURE RESEARCH, 2007, 27 (03) :333-351

[3] LOWER LIMIT TO THE THERMAL-CONDUCTIVITY OF DISORDERED CRYSTALS [J].

CAHILL, DG ;

WATSON, SK ;

POHL, RO .

PHYSICAL REVIEW B, 1992, 46 (10) :6131-6140

[4] Properties of single crystalline semiconducting CoSb3 [J].

Caillat, T ;

Borshchevsky, A ;

Fleurial, JP .

JOURNAL OF APPLIED PHYSICS, 1996, 80 (08) :4442-4449

[5] 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

[6] Einstein modes in the phonon density of states of the single-filled skutterudite Yb0.2Co4Sb12 [J].

Dimitrov, I. K. ;

Manley, M. E. ;

Shapiro, S. M. ;

Yang, J. ;

Zhang, W. ;

Chen, L. D. ;

Jie, Q. ;

Ehlers, G. ;

Podlesnyak, A. ;

Camacho, J. ;

Li, Qiang .

PHYSICAL REVIEW B, 2010, 82 (17)

[7] Thermoelectric properties of the n-type filled skutterudite Ba0.3Co4Sb12 doped with Ni [J].

Dyck, JS ;

Chen, WD ;

Uher, C ;

Chen, L ;

Tang, XF ;

Hirai, T .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (06) :3698-3705

[8] High-temperature thermoelectric properties of thallium-filled skutterudites [J].

Harnwunggmoung, Adul ;

Kurosaki, Ken ;

Muta, Hiroaki ;

Yamanaka, Shinsuke .

APPLIED PHYSICS LETTERS, 2010, 96 (20)

[9] Thermoelectric properties of indium-filled skutterudites [J].

He, T ;

Chen, JZ ;

Rosenfeld, HD ;

Subramanian, MA .

CHEMISTRY OF MATERIALS, 2006, 18 (03) :759-762

[10] Einstein oscillators in thallium filled antimony skutterudites [J].

Hermann, RP ;

Jin, RJ ;

Schweika, W ;

Grandjean, F ;

Mandrus, D ;

Sales, BC ;

Long, GJ .

PHYSICAL REVIEW LETTERS, 2003, 90 (13) :135505/1-135505/4

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