|
|||||
|
|
| Ni掺杂对Co4-xNixSb12热电转换性能的影响 | |
| 引用本文： | 赵雪盈,史迅,陈立东,唐新峰.Ni掺杂对Co4-xNixSb12热电转换性能的影响[J].无机材料学报,2006,21(2):392-396. |
| 作者姓名： | 赵雪盈 史迅 陈立东 唐新峰 |
| 作者单位： | 1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室,上海,200050;中国科学院研究生院,北京,100049 2. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室,上海,200050 3. 武汉理工大学材料复合新技术国家重点实验室,武汉,430070 |
| 基金项目： | 国家重点基础研究发展计划(973计划);中国科学院资助项目;武汉工业学院校科研和教改项目 |
| 摘 要： | 采用熔融法合成了Skutterudite化合物Co4-xNixSb12，并研究了Ni掺杂对该化合物的高温热电性能的影响．实验结果表明：由于Ni向Skutterudite结构中提供电子。导致化合物的载流子浓度和电导率随Ni置换量的增加而增加，Seebeck系数为负值，Seebeck系数的峰值温度随Ni置换量的增加向高温方向移动；Ni置换引入了电子-声子散射，导致晶格热导率降低．对于Skutterudite化合物Co4-xNixSb12，得到的最大热电性能指数ZT约为0．55． |
| 关 键 词： | Ni掺杂 热电性能 |
| 文章编号： | 1000-324X（2006）02-0392-05 |
| 收稿时间： | 04 28 2005 12:00AM |
| 修稿时间： | 2005-04-282005-06-28 |
Influence of Ni Doping on the Thermoelectric Properties of Co4-xNixSb12 |
|
| ZHAO Xue-Ying,SHI Xun,CHEN Li-Dong,TANG Xin-Feng.Influence of Ni Doping on the Thermoelectric Properties of Co4-xNixSb12[J].Journal of Inorganic Materials,2006,21(2):392-396. | |
| Authors: | ZHAO Xue-Ying SHI Xun CHEN Li-Dong TANG Xin-Feng |
| Affiliation: | 1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, CAS, Shanghai 200050, China; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China; 3. The State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China |
| Abstract: | Skutterudite compound Co4-xNixSb12 was synthesized by the melting method and its thermal and electrical properties were measured in the temperature range of 300-850K. The carrier concentration and electrical conductivity increase with increasing Ni content substituting for Co. The absolute value of Seebeck coefficient decreases and Topt of Seebeck coefficient shifts to a higher temperature with the increase of Ni content. These different transport behaviors in the samples are ascribed to the introduction of extra electrons to the Skutterudite structure by Ni substitution. The lattice thermal conductivity of Co4-xNixSb12 is significantly depressed as compared to that of CoSb3 by introducing extra electron-phonon scattering mode. The maximum ZT value obtained for Co3.92Ni0.08Sb12 at 750K is about 0.55. |
| Keywords: | Skutterudite |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《无机材料学报》浏览原始摘要信息 | |
| 点击此处可从《无机材料学报》下载全文 | |