Enhancement of Thermoelectric Performance of Ball-Milled Bismuth Due to Spark-Plasma-Sintering-Induced Interface Modifications

被引：33
|
作者：
Puneet, Pooja [1 ]
Podila, Ramakrishna [1 ,2 ]
Zhu, Song [1 ]
Skove, Malcolm J. [1 ]
Tritt, Terry M. [1 ]
He, Jian [1 ]
Rao, Apparao M. [1 ,3 ]
机构：
[1] Clemson Univ, Dept Phys & Astron, Clemson, SC 29634 USA
[2] E Carolina Univ, Brody Sch Med, Dept Pharmacol & Toxicol, Greenville, NC 27834 USA
[3] Clemson Univ, Ctr Opt Mat Sci & Engn Technol, Clemson, SC 29634 USA
来源：
ADVANCED MATERIALS | 2013年 / 25卷 / 07期
关键词：
bismuth; interface; surface modifications; thermoelectric materials; spark plasma sintering; TRANSPORT-PROPERTIES; BI; NANOWIRES; NANOCOMPOSITES;
D O I：
10.1002/adma.201204010
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Interface modification in transport properties of single elemental polycrystalline Bi via spark plasma sintering results in 'double-decoupling' (simultaneous decoupling of thermopower, electrical, and thermal conductivity) of otherwise coupled entities. In spark plasma sintering, the DC pulse current helps in controlling the nature and extent of surfaces of ball-milled Bi and hence results in six-fold improvement in the dimensionless figure of merit (ZT) relative to as-purchased samples. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：1033 / 1037
页数：5
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