Synthesis and thermoelectric properties of Nd-single filled p-type skutterudites
Synthesis and thermoelectric properties of Nd-single filled p-type skutterudites
复制标题
Nd单填充p型方钴矿的合成及热电性能
DOI：
10.1088/1674-1056/27/4/047203
复制
发表时间：
2018
影响因子：
1.7
通讯作者：
Zhou Xiao-Yuan
中科院分区：
文献类型：
--
作者：
Wu Hong;Shaheen Nusrat;Yang Heng-Quan;Peng Kun-Ling;Shen Xing-Chen;Wang Guo-Yu;Lu Xu;Zhou Xiao-Yuan
本文报道了用固相反应法合成Nd填充和Fe取代的p型方钴矿NdxFe3.2Co0.8Sb12（x = 0.5，0.6，0.7，0.8和0.9）。在室温至850 K的温度范围内研究了Nd填料对薄膜电输运和热输运性质的影响。Nd 0.8Fe 3.2Co 0.8Sb 12在673 K时的晶格热导率最低，为0.88 W · m-1 · K-1，这是由于填充物的局域振动模式和晶界的增加所致。而Nd 0.9Fe 3.2Co 0.8Sb 12样品在668 K时的最大功率因数为2.77 mW · m-1 · K-2。总的来说，最高的无量纲优值zT = 0.87是实现在714 K的Nd0.9Fe3.2Co0.8Sb12。
We report the synthesis of Nd-filled and Fe substituted p-type NdxFe3.2Co0.8Sb12 (x = 0.5, 0.6, 0.7, 0.8, and 0.9) skutterudites by the solid-state reaction method. The influences of Nd filler on the electrical and thermal transport properties are investigated in a temperature range from room temperature to 850 K. A lowest lattice thermal conductivity of 0.88 W · m − 1 · K − 1 is obtained in Nd0.8Fe3.2Co0.8Sb12 at 673 K, which results from the localized vibration modes of fillers and the increase of grains boundaries. Meanwhile, the maximum power factor is 2.77 mW · m − 1 · K − 2 for the Nd0.9Fe3.2Co0.8Sb12 sample at 668 K. Overall, the highest dimensionless figure of merit zT = 0.87 is achieved at 714 K for Nd0.9Fe3.2Co0.8Sb12.