Rapid preparation method of bulk nanostructured Yb0.3Co4Sb12+y compounds and their improved thermoelectric performance
Rapid preparation method of bulk nanostructured Yb0.3Co4Sb12+y compounds and their improved thermoelectric performance
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DOI：
10.1063/1.3054158
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发表时间：
2008-12-22
影响因子：
4
通讯作者：
Uher, Ctirad
中科院分区：
文献类型：
--
作者：
Li, Han;Tang, Xinfeng;Uher, Ctirad
介绍了一种快速制备高性能纳米结构Yb0.3Co4Sb12+y（y=0.3和0.6）化合物的合成路线。与传统方法制备的样品相比，处理时间从典型的10天缩短到40 h以内，Yb填充分数极限提高，热电输运性能得到显著改善。结果表明，在800 K时，Yb0.3Co4Sb12.3的无量纲优值达到1.3。热电性能的提高和加工时间的大幅缩短对方钴矿基热电材料的商业化生产具有重要意义。
A synthetic route was introduced to speed up the preparation of high performance nanostructured Yb0.3Co4Sb12+y (y=0.3 and 0.6) compounds. Compared with the samples prepared by a traditional method, the processing time is reduced from the typical 10 days to less than 40 h, the Yb filling fraction limit increases, and the resulting thermoelectric transport properties are improved significantly. As a consequence, the dimensionless figure of merit of our bulk nanostructured Yb0.3Co4Sb12.3 reaches 1.3 at 800 K. The enhanced thermoelectric performance coupled with the dramatically reduced processing time will be of considerable significance to the commercial-scale production of skutterudite-based thermoelectric materials.