Ba6-3xNd8+2xTi18O54 Tungsten Bronze: A New High-Temperature n-Type Oxide Thermoelectric

被引：15

作者：

Azough, Feridoon ^{[1
]}

Freer, Robert ^{[1
]}

Yeandel, Stephen R.

Baran, Jakub D.

Molinari, Marco

Parker, Stephen C. ^{[2
]}

Guilmeau, Emmanuel ^{[2
,3
]}

Kepaptsoglou, Demie ^{[2
,4
]}

Ramasse, Quentin ^{[2
,4
]}

Knox, Andy ^{[5
]}

Gregory, Duncan ^{[5
]}

Paul, Douglas ^{[5
]}

Paul, Manosh ^{[5
]}

Montecucco, Andrea ^{[5
]}

Siviter, Jonathan ^{[5
]}

Mullen, Paul ^{[5
]}

Li, Wenguan ^{[5
]}

Han, Guang ^{[5
]}

Man, Elena A. ^{[5
]}

Baig, Hasan ^{[6
]}

Mallick, Tapas ^{[6
]}

Sellami, Nazmi ^{[6
]}

Min, Gao ^{[7
]}

Sweet, Tracy ^{[7
]}

机构：

[1] Univ Manchester, Manchester, Lancs, England

[2] Univ Bath, Bath BA2 7AY, Avon, England

[3] Lab CRISMAT, Caen, France

[4] SuperSTEM Lab, Daresbury, England

[5] Univ Glasgow, Glasgow, Lanark, Scotland

[6] Univ Exeter, Exeter, Devon, England

[7] Cardiff Univ, Cardiff CF10 3AX, S Glam, Wales

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2016年 / 45卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

Oxide ceramic; tungsten bronze; titanate; thermal conductivity; thermoelectric; molecular dynamics; modelling; IRREVERSIBLE-PROCESSES; SOLID-SOLUTIONS;

D O I：

10.1007/s11664-015-4275-6

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Semiconducting Ba6-3xNd8+2xTi18O54 ceramics (with x = 0.00 to 0.85) were synthesized by the mixed oxide route followed by annealing in a reducing atmosphere; their high-temperature thermoelectric properties have been investigated. In conjunction with the experimental observations, atomistic simulations have been performed to investigate the anisotropic behavior of the lattice thermal conductivity. The ceramics show promising n-type thermoelectric properties with relatively high Seebeck coefficient, moderate electrical conductivity, and temperature-stable, low thermal conductivity; For example, the composition with x = 0.27 (i.e., Ba5.19Nd8.54Ti18O54) exhibited a Seebeck coefficient of S-1000K = 210 mu V/K, electrical conductivity of sigma(1000K) = 60 S/cm, and thermal conductivity of k(1000K) = 1.45 W/(m K), leading to a ZT value of 0.16 at 1000 K.

引用

页码：1894 / 1899

页数：6

共 18 条

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