High thermoelectric performance of triple-filled n-type skutterudites (Sr,Ba,Yb)yCo4Sb12

被引：68

作者：

Zhang, L. ^{[1
,3
]}

Grytsiv, A. ^{[1
]}

Rogl, P. ^{[1
]}

Bauer, E. ^{[2
]}

Zehetbauer, M. ^{[3
]}

机构：

[1] Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria

[2] TU Wien, Inst Solid State Phys, A-1040 Vienna, Austria

[3] Res Grp Phys Nanostructured Mat, A-1090 Vienna, Austria

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 22期

关键词：

TRANSPORT-PROPERTIES; PHYSICAL-PROPERTIES;

D O I：

10.1088/0022-3727/42/22/225405

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The influences of single, double and triple filling of Yb, Ba and Sr in CoSb3 on thermoelectric performance were evaluated. A significant suppression of lattice thermal conductivity kappa(1) is achieved by the increase in the number of filler elements. The highest power factor appears in triple-filled (Ba0.1Yb0.1)(0.25)(Sr0.1Yb0.1)(0.75)Co4Sb12, whereas single-filled Ba0.23Co4Sb12 has higher S-2/rho than double-filled (Ba,Yb)(0.2)Co4Sb12 forming a sequence S-2/rho (triple filling) > S-2/rho (single filling) > S-2/rho (double filling). However, the respective figures of merit follow a sequence S-2/rho((triple filling)) > S-2/rho((double filling)) > S-2/rho ((single filling)) proving a strong correlation with kappa(1) that appears to be a predominant factor in the efficiency of filled skutterudites. Thus,. and ZT increase with increasing lattice thermal resistivity (1/kappa(1)) and maximum efficiencies may be obtained for 1/kappa(1) > 0.2 cm K mW(-1).

引用

页数：9

共 52 条

[1]

Anno H, 2000, RRD APPL PHYS, V3, P47

[2]

Anno H., 2002, MAT RES SOC S P, V691

[3]

Bai SQ, 2006, ICT'06: XXV INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS, P145

[4] Physical properties of skutterudites YbxM4Sb12, M = Fe, Co, Rh, Ir [J].

Bauer, E ;

Galatanu, A ;

Michor, H ;

Hilscher, G ;

Rogl, P ;

Boulet, P ;

Noël, H .

EUROPEAN PHYSICAL JOURNAL B, 2000, 14 (03) :483-493

[5] Chemical properties and thermopower of the new series of skutterudite Ce1-pYbpFe4Sb12 [J].

Bérardan, D ;

Godart, C ;

Alleno, E ;

Berger, S ;

Bauer, E .

JOURNAL OF ALLOYS AND COMPOUNDS, 2003, 351 (1-2) :18-23

[6]

Cenedese S, 2008, J PHYS CONF SER, V117, DOI [10.1088/1742-6596/117/1/012010, 10.1088/1742-6596/119/3/032011]

[7] Barium-filled skutterudite: A high performance n-type thermoelectric material [J].

Chen, LD .

HIGH-PERFORMANCE CERAMICS 2001, PROCEEDINGS, 2002, 224-2 :197-200

[8] 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

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

CUTLER, M ;

LEAVY, JF ;

FITZPATRICK, RL .

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

[10] Intermediate valence in the filled skutterudite compound YbFe4Sb12 [J].

Dilley, NR ;

Freeman, EJ ;

Bauer, ED ;

Maple, MB .

PHYSICAL REVIEW B, 1998, 58 (10) :6287-6290

← 1 2 3 4 5 6 →