Research on Properties of Ca-Co-O Thermoelectric Material with Adding Sm

摘要：

Ca3Co4O9 and Ca3-xSmxCo4O9 powders were prepared by sol-gel process. The Ca-Co-O thermoelectric material ceramics were prepared. The ceramics materials were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The microstructure and thermoelectric properties of ceramics were researched. The results indicate that the crystal of Ca3-xSmxCo4O9 with Sm adding growth ideally, the material had high density and low pore rate. The Ca3-xSmxCo4O9 ceramics contain directional array plate-shaped grains with layered structure. The thermoelectric properties of Ca3-xSmxCo4O ceramics were excellent. There were high Seebeck coefficient and high electrical conductivity for Ca3-xSmxCo4O9 ceramics. The power factor increased with temperature increasing.

关键词： Ca3-xSmxCo4O9 sol-gel microstructure thermoelectric properties

作者: MU Jie-chen WEI Xiu-ting ZHANG Li-peng

作者单位: School of Mechanical Engineering, Shandong University of Technology, Zibo, China Wan Jie Group CO.LTD, Zibo, China 255091

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 260-265

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）