Enhancement of thermoelectric properties by atomic-scale percolation in digenite CuxS

被引：50

作者：

Jiang, Qinghui ^{[1
]}

Yan, Haixue ^{[1
]}

Khaliq, Jibran ^{[1
]}

Shen, Yang ^{[2
]}

Simpson, Kevin ^{[3
]}

Reece, M. J. ^{[1
]}

机构：

[1] Queen Mary Univ London, Sch Engn & Mat Sci, London E1 4NS, England

[2] Tsinghua Univ, State Key Lab New Ceram & Fine Progressing, Beijing 100084, Peoples R China

[3] European Thermodynam Ltd, Leicester LE8 0RX, Leics, England

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 25期

关键词：

THERMAL-CONDUCTIVITY; POLYMER COMPOSITES; CARBON NANOTUBE; SYSTEM; TRANSPORT; ANILITE;

D O I：

10.1039/c4ta01250j

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：

Atomic-scale percolation phenomena of electric and thermal conductivity were found in digenite CuxS. Copper ions are randomly located between the closely packed sulphur ions and jump to another position via unoccupied interstices. Near the percolation threshold value (f(c) similar to 0.3) in the conductive region, a 60% enhancement of ZT value can be obtained. This indicates that the percolation phenomena can provide a new strategy to optimize the properties of thermoelectric materials, especially for quasi disordered materials.

引用

页码：9486 / 9489

页数：4

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