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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 11    No. 6    December 2001

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Thermoelectric properties of
Bi0.5Sb1.5Te3/polyaniline composites prepared by
mechanical blending and in-situ polymerization
HU Shu-hong(胡淑红), PEI Hao-dong(裴浩东), ZHAO Xin-bing(赵新兵)

Department of Materials Science and Engineering, State Key Laboratory of Silicon Materials,
Zhejiang University, Hangzhou 310027, P.R.China

Abstract: Bi0.5Sb1.5Te3/polyaniline composites were prepared by mechanical blending and in-situ polymerization, and their transport properties were measured. It was found that for the composites with 1%, 3%, 5% and 7% polyaniline (mass fraction) respectively, which were prepared by mechanical blending, the power factors decrease by about 30%,50%,55%and 65% compared with the Bi0.5Sb1.5Te3 samples, which is mainly due to the remarkable decreases of the electrical conductivity. The electrical conductivity and power factor of the composites samples with 7% polyaniline prepared by in-situ polymerization are higher by about 65%and 60%,respectively, than that of the corresponding samples prepared by mechanical blending.

 

Key words:  thermoelectric property; Bi0.5Sb1.5Te3/polyaniline composite; mechanical blending; in-situ polymerization

ISSN 1672-7029
CN 43-1423/U

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