热电材料Ag0.8Pb18SbTe20-xSex的高压制备与性能
High Pressure Synthesis and Thermoelectric Properties of Ag0.8Pb18SbTe20-xSex
作者:宿太超(河南理工大学 材料科学与工程学院);周佑默(河南理工大学 材料科学与工程学院);李小雷(河南理工大学 材料科学与工程学院);李尚升(河南理工大学 材料科学与工程学院);胡强(河南理工大学 材料科学与工程学院);贺春元(河南理工大学 材料科学与工程学院);马红安(吉林大学 超硬材料国家重点实验室);贾晓鹏(河南理工大学 材料科学与工程学院;吉林大学 超硬材料国家重点实验室)
Author:Su Taichao(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.);Zhou Youmo(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.);Li Xiaolei(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.);Li Shangsheng(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.);Hu Qiang(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.);He Chunyuan(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.);Ma Hong'an(National Key Lab. of Superhard Materials, Jilin Univ.);Jia Xiaopeng(Inst. of Materials Sci. and Eng., Henan Polytechnic Univ.;National Key Lab. of Superhard Materials, Jilin Univ.)
收稿日期:2011-03-01 年卷(期)页码:2012,44(1):189-191
期刊名称:工程科学与技术
Journal Name:Advanced Engineering Sciences
关键字:压力;热电;X射线衍射;赛贝克系数;热导率
Key words:pressure;thermoelectricity;X-ray diffraction;Seebeck coefficient;thermal conductivity
基金项目:国家自然科学基金资助项目(51001042;50731006;50801030);河南理工大学博士基金项目 (B2010-55);吉林大学超硬材料国家重点实验室开放课题资助项目(201005;201111)
中文摘要
采用高压合成技术,制备了热电材料Ag0.8Pb18SbTe20-xSex(x=0,5,10,15)。研究了合成压力及Se含量对其结构和热电输运性质的影响。X射线衍射测试发现,Ag0.8Pb18SbTe20-xSex样品具有单相的NaCl结构,晶格常数随Se含量的增大而减小。室温下的测试结果表明,高压和置换Se对AgPb18SbTe20电学性质的影响作用相似,随合成压力及x的增大,Ag0.8Pb18SbTe20-xSex的电阻率及赛贝克(Seebeck)系数降低。4 GPa高压合成的Ag0.8Pb18SbT
英文摘要
Thermoelectric materials Ag0.8Pb18SbTe20-xSex(x=0,5,10,15) were synthesized by high pressure method. X-ray diffraction showed that the Ag0.8Pb18SbTe20-xSex samples have the structure of NaCl indexed and the lattice constant decreases with an increase of x. The electrical properties including the Seebeck coefficient and the electrical resistivity depending on synthetic pressure and the content of xwere studied at room temperature. The measurements showed that the Seebeck coefficient and electrical resistivity of Ag0.8Pb18SbTe20-xSex decreased with the increase of pressure and x. The maximum figure of merit, ZTof 0.40, was obtained for the sample of Ag0.8Pb18SbTe20-xSex(x=10) synthesized at 4 GPa, which matches to the result of Hsu reported at Science.
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