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材料研究学报  2012, Vol. 26 Issue (1): 31-36    
  研究论文 本期目录 | 过刊浏览 |
钙钛矿型热电氧化物Y0.95R0.05CoO3 (R=Ca, Sr, Ba)的制备和热电性能
刘义, 李海金, 张清, 刘厚通
安徽工业大学数理学院 马鞍山 243032
Fabrication and Thermoelectric Properties of Peovskite-type Thermoelectric Oxide Y0.95R0.05CoO3 (R=Ca, Sr, Ba)
LIU Yi, LI Haijin, ZHANG Qing, LIU Houtong
School of Mathematics and Physics, Anhui University of Technology, Maanshan 243032
引用本文:

刘义 李海金 张清 刘厚通. 钙钛矿型热电氧化物Y0.95R0.05CoO3 (R=Ca, Sr, Ba)的制备和热电性能[J]. 材料研究学报, 2012, 26(1): 31-36.
, , , . Fabrication and Thermoelectric Properties of Peovskite-type Thermoelectric Oxide Y0.95R0.05CoO3 (R=Ca, Sr, Ba)[J]. Chin J Mater Res, 2012, 26(1): 31-36.

全文: PDF(993 KB)  
摘要: 采用溶胶--凝胶法制备化合物Y0.95R0.05CoO3(R=Ca, Sr, Ba),研究了碱土元素替代对YCoO3电输运和热电性能的影响。结果表明, 随着替代离子Ca2+、Sr2+、Ba2+离子半径的增大, 在相应温度下替代化合物Y0.95R0.05CoO3的电阻率逐渐增大,Seebeck系数增大, 功率因子降低。离子半径较小且与替代离子半径相近的Ca2+离子替代能有效提高YCoO3体系高温热电功率因子。
关键词 无机非金属材料热电材料溶胶-凝胶YCoO3    
Abstract:The alkaline-earth metal substituted compounds Y0.95R0.05CoO3 (R=Ca, Sr, Ba) were prepared by sol–gel process, and the effect of substituting on its electrical transport and thermoelectric properties were systematically investigated. The results show that with the increase of Ca2+、Sr2+、Ba2+ ionic radius, the electrical resistivity of the Y0.95R0.05CoO3 compounds increases gradually, Seebeck coefficient was improving, and the power factor decreases, in corresponding temperature range. The high-temperature thermoelectric power factor of the YCoO3 system can be improved effectively by the substitution of Ca2+ with smaller radius approaching that of the ion Y3+.
Key wordsinorganic non-metallic materials    thermoelectric materials    sol-gel    YCoO3
收稿日期: 2011-10-17     
ZTFLH: 

TB321

 
基金资助:

国家自然基金41075027、安徽省高等学校省级自然科学重点研究KJ2011A053、安徽省高等学校省级教学研究项目2008jyxm313、中国科学院新型薄膜太阳电池重点实验室开放研究基金KF201101资助项目。

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