硅酸盐学报2011，Vol.39Issue(6)：984-988,5.
Ca2-xSmxCO2O5热电材料的制备及性能
Preparation and Properties of Thermoelectric Material Ca2-xSmxCo205
摘要
Abstract
Sm3+-doped thermoelectric powders of Ca2-xSmxCo2O5 were prepared by the citrate sol-gel method with citrate as complexing agent, glycol as dispersant and Ca(NO3)2·4H20 and Co(NO3)2·6H2O as reagents. Block samples were obtained by the compacting and sintering processes. Thermoelectric properties of Ca2-xSmxCo2O5, such as resistivity ρ, Seebeck coefficient S and power factor P were studied. Results show that when x=0.10-0.30, in contrast with the standard PDF 37-0668, all the X-ray diffraction peaks are consistent and do not shift. When x=0.45, new peaks of Sm3+ impurities appear. Sm3+ substitution greatly improves the thermoelectric properties, reduces the resistivity, and enhances the Seebeck coefficient of Ca2Co2O5. The x=0.30 specimen has improved electrical properties. The highest power factor is 1.25 × 10-4 W/(m·K2) at 600 ℃ for sample Ca1.70Sm0.30Co2O5.关键词
钴酸钙/热电材料/掺杂/热电性能/溶胶-凝胶法Key words
cobalt calcium/ thermoelectric materials/ doping/ thermoelectric properties/ sol-gel method分类
信息技术与安全科学引用本文复制引用
刘晓宇,魏长平,于敏娜,李波..Ca2-xSmxCO2O5热电材料的制备及性能[J].硅酸盐学报,2011,39(6):984-988,5.基金项目
中国科学技术协会"海外智力为国服务行动计划"(07064)资助项目. （07064）
