Improved thermoelectric performance of n-type Ca and Ca-Ce filled skutterudites
Improved thermoelectric performance of n-type Ca and Ca-Ce filled skutterudites
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DOI：
10.1063/1.4904187
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发表时间：
2014-12
影响因子：
3.2
通讯作者：
D. Thompson;Chang Liu;Nicole D. Ellison;J. Salvador;M. Meyer;B. HaddadDaad;Hsin Wang;W. Cai
中科院分区：
文献类型：
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作者：
D. Thompson;Chang Liu;Nicole D. Ellison;J. Salvador;M. Meyer;B. HaddadDaad;Hsin Wang;W. Cai
在美国能源部的支持下，通用汽车正在推进用于汽车废热回收的热电（TE）技术。方钴矿由于其上级力学性能和良好的TE性能，是一种非常有前途的TE技术应用材料。双填充YbxBayCo 4Sb 12在750 K时的ZT值约为1.1，是使用经济上可行的熔融纺丝（MS）结合放电等离子体烧结（SPS）方法大规模生产的性能最好的n型方钴矿。另一种经济的吨级生产方法，熔体淬火退火（MQA）技术，最近已被Treibacher Industrie AG要求保护，进一步的信息可用[G。Rogl等人，材料学报。76，434-448（2014）]。这些材料的商业应用的一个可能障碍是使用稀土作为填料以降低热导率并改善电传输性能。本文将表明，skutterudites斗…
Thermoelectric (TE) technology for use in automotive waste heat recovery is being advanced by General Motors with support from the US Department of Energy. Skutterudites are a very promising material for this application of TE technology due to their superior mechanical properties and good TE performance. Double-filled YbxBayCo4Sb12 with ZT values around 1.1 at 750 K are the best performing n-type skutterudites produced on a large scale using an economically viable approach of melt spinning (MS) in conjunction with spark plasma sintering (SPS). Another economical production method on the tons scale, the melt quench annealing (MQA) technique, has been recently claimed by Treibacher Industrie AG, further information is available [G. Rogl et al., Acta Mater. 76, 434–448 (2014)]. A possible hurdle to commercial implementation of these materials is the use of rare earths as the fillers to reduce thermal conductivity and improve the electrical transport properties. It will be shown herein that skutterudites dou...