电子元件与材料2017，Vol.36Issue(11)：27-32,6.DOI:10.14106/j.cnki.1001-2028.2017.11.005
La掺杂对Ca3-xLaxCo3.9Cu0.1O9+δ/Bi2Ca2Co1.9Cu0.1Oy复合热电材料的性能优化研究
Optimization of thermoelectric properties of La-doped Ca3–xLaxCo3.9Cu0.1O9+δ/Bi2Ca2Co1.9Cu0.1Oy composites
摘要
Abstract
Ca3–xLaxCo3.9Cu0.1O9+δ(0≤x≤0.16) and Bi2Ca2Co1.9Cu0.1Oypowders were synthesized by the methods of molten salt reaction and solid phase reaction, respectively. The Ca3–xLaxCo3.9Cu0.1O9+δ/Bi2Ca2Co1.9Cu0.1Oy thermoelectric composites were prepared by hot pressing sintering. The effects of La doping on the microstructure, phase composition and the thermoelectric properties of the composites were studied. The results show that the XRD patterns of La-doped thermoelectric composites are consistent with the standard JCPDS patterns, and no impurities are found. The partial substitution of La at Ca-site induces a simultaneous increase in the electrical conductivity and Seebeck coefficient. At 973 K, the maximum of the power factor of the thermoelectric composites Ca3-xLaxCo3.9Cu0.1O9+δ/Bi2Ca2Co1.9Cu0.1Oyis obtained when x =0.08, about 4.477×10–4W·m–1·K–2.关键词
La掺杂/Ca3Co4O9+δ/Bi2Ca2Co2Oy/Seebeck系数/电阻率/功率因子Key words
La doping/Ca3Co4O9+δ/Bi2Ca2Co2Oy/Seebeck coefficient/resistivity/power factor分类
通用工业技术引用本文复制引用
李树艳,金应荣,冯宁博,鄢健,陈显涛..La掺杂对Ca3-xLaxCo3.9Cu0.1O9+δ/Bi2Ca2Co1.9Cu0.1Oy复合热电材料的性能优化研究[J].电子元件与材料,2017,36(11):27-32,6.基金项目
西华大学研究生创新基金项目(No.ycjj2016042) （No.ycjj2016042）
