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State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

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School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

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State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China





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Author to whom correspondence should be addressed.



Academic Editors: Kunihito Koumoto and Chunlei Wan

Abstract Polycrystalline Bi2O2Se-Ag nanocomposites were synthesized by spark plasma sintering process. Their thermoelectric properties were evaluated from 300 to 673 K. With the addition of silver, the conductive second phase Ag2Se and Ag can be observed, which results in a significant enhancement of electrical conductivity. The maximum conductivity is 691.8 S cm−1 for Bi2O2Se-20 vol.% Ag, which increased nearly 500 higher times than the pure Bi2O2Se bulk. ZT value can be enhanced greatly, ~0.07, for Bi2O2Se-5 vol.% Ag at 673 K, which is two times larger than the pure sample. View Full-Text

Keywords: Bi2O2Se; thermoelectric; spark plasma sintering; Ag addition Bi2O2Se; thermoelectric; spark plasma sintering; Ag addition





Autor: Bin Zhan 1, Yaochun Liu 2, Jinle Lan 3, Chengcheng Zeng 1, Yuan-Hua Lin 1,* , 1 and Ce-Wen Nan 1

Fuente: http://mdpi.com/



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