Preparation and Thermoelectric Properties of AgPb18SbTe20 Materials via Hydrothermal Synthesis Method

摘要：

　　AgPb18SbTe20 nano-powders have been synthesized by a hydrothermal synthesis method at 180 ℃ for 20 h,using AgNO3,Pb(NO3)2,Sb(NO3)3,Na2TeO3 as starting materials and KBH4 as a reductant.AgPb18SbTe20 bulk thermoelectric materials were obtained by pressureless sintering at 450 ℃ or 520 ℃ under argon atmosphere,after uniaxial pressing the as-synthesized powders into pellets.The phase composition and thermal effects of as-prepared powders were characterized by X-ray diffraction (XRD) and DSC-TG analyses,respectively.Electrical properties of the as-prepared bulk materials were measured from room temperature to about 700 K,and the maximum power factor of 85 μW/mK2 was achieved at 600 K for the sample sintered at 723 K for 3 h.

关键词： AgPb18SbTe20 nano-powders Thermoelectric materials Hydrothermal synthesis

作者: H.Li K.F.Cai H.F.Wang L.Wang X.L.Li

作者单位: Functional Materials Research Laboratory,Tongji University,Shanghai 200092,P.R.China

会议类型: 国际会议

会议名称: The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))

会议地点: 长沙

会议语种:英文

页码: 550-552

在线出版日期: 2007-05-10（万方平台首次上网日期，不代表论文的发表时间）