人工晶体学报2012，Vol.41Issue(3)：611-615,5.
Sr掺杂对Ca3Co4O9基材料热电性能的影响
Effects of Sr Doping on the Thermoelectric Properties of Ca3Co4O9-based Materials
摘要
Abstract
Poly crystalline Ca3-r SrxCo4O9 (x =0-0. 5) ceramics were prepared by the sol-gel method combined with the ordinary pressing sintering and the thermoelectric properties were measured from room temperature to 673 K. The Sr doping had a greater impact on the thermoelectric properties of Ca3Co4O9. The conductivity increased significantly as the Sr content increasing, and the Seebeck coefficient decreased slightly. Sr doping could reduce the thermal conductivity observably, and with the doping content increasing, the decrease amplitude of the thermal conductivity increased gradually. These results indicated that the thermoelectric properties of the material could be optimized remarkably with the Sr doping. The themoelectirc figure of merit Z reached 1.07 x 10-4 K-1 at 573 K for the sample of Ca2.5 Sr0.5Co4O9.关键词
钴酸钙/电导率/热导率Key words
Ca3Co4O9/ conductivity/ thermal conductivity分类
信息技术与安全科学引用本文复制引用
汪南,漆小玲,曾令可..Sr掺杂对Ca3Co4O9基材料热电性能的影响[J].人工晶体学报,2012,41(3):611-615,5.基金项目
中央高校基本科研业务(2011ZM0043)资助项目 （2011ZM0043）
