Solvothermal synthesis and thermoelectric properties of skutterudite compound Fe_(0.25)Ni_(0.25)Co_(0.5)Sb_3

作     者：MI Jianli ZHAO Xinbing ZHU Tiejun MI Jianli, ZHAO Xinbing, and ZHU Tiejun State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

作者机构：State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2009年第28卷第3期

页      面：237-240页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Basic Research Program of China (No. 2007CB607502) the Key Program of National Natural Science Foundation of China (No. 50731006) 

主　　题：skutterudite solvothermal synthesis nanomaterials thermoelectric properties 

摘      要：Nanostructured skutterudite-related compound Fe0.25Ni0.25Co0.5Sb3 was synthesized by a solvothermal method using FeCl3, NiCl2, CoCl2, and SbCl3 as the precursors and NaBH4 as the reductant. The solvothermally synthesized powders consisted of fine granules with an average particle size of tens of nanometers. The bulk material was prepared by hot pressing the powders. Transport property measurements indicated a heavily doped semiconductor behavior with n-type conduction. The thermal conductivity is about 1.83 W·m-1·K-1 at room temperature and decreases to 1.57 W·m-1·K-1 at 673 K. The low thermal conductivity is attributed to small grain size and high porosity. A maximum dimensionless figure of merit of 0.15 is obtained at 673 K.