High pressure synthesis of p-type Fe-substituted CoSb3 skutterudites

被引：13
|
作者：
Liu, Yadi [1 ]
Li, Xiaohui [1 ]
Zhang, Qian [1 ]
Chen, Chen [1 ]
Li, Jianghua [1 ]
Zhang, Long [1 ]
Yu, Dongli [1 ]
Tian, Yongjun [1 ]
Xu, Bo [1 ]
机构：
[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2016年 / 27卷 / 06期
基金：
美国国家科学基金会;
关键词：
TEMPERATURE THERMOELECTRIC PROPERTIES; TE-DOPED COSB3; TRANSPORT-PROPERTIES; PERFORMANCE;
D O I：
10.1007/s10854-016-4582-6
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Fe-substituted CoSb3 skutterudites were successfully synthesized with high pressure synthesis method. The composition, structure, and thermoelectric properties were investigated. Co(4-x)Fex(S)b(12) samples have the skutterudite structure of Im (3) over bar symmetry. The hole concentration increases with elevating Fe substitution level. Compared with those ambient-pressure synthesized Fe-substituted CoSb3 samples, our samples exhibit enhanced power factor and suppressed thermal conductivity which benefitted from high pressure. The optimal Co3.2Fe0.8Sb12 shows a peak ZT of 0.53 at 823 K, the highest value for Co-rich p-type skutterudites with single-element substitution. Current study on Co4-xFexSb12 provides a basis for further thermoelectric performance enhancement of Co-rich p-type skutterudites.
引用
收藏
页码：6433 / 6437
页数：5
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