Enhanced Thermoelectric Performance of Bi2O2Se with  Ag Addition

Bin Zhan; Yaochun Liu; Jinle Lan; Chengcheng Zeng; Yuan-Hua Lin; Ce-Wen Nan

doi:10.3390/ma8041568

Materials (Apr 2015)

Enhanced Thermoelectric Performance of Bi2O2Se with Ag Addition

Bin Zhan,
Yaochun Liu,
Jinle Lan,
Chengcheng Zeng,
Yuan-Hua Lin,
,
Ce-Wen Nan

Affiliations

Bin Zhan: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Yaochun Liu: School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Jinle Lan: State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
Chengcheng Zeng: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Yuan-Hua Lin: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Ce-Wen Nan: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

DOI: https://doi.org/10.3390/ma8041568
Journal volume & issue: Vol. 8, no. 4
pp. 1568 – 1576

Abstract

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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.

Published in Materials

ISSN: 1996-1944 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering; Technology: Engineering (General). Civil engineering (General); Science: Natural history (General): Microscopy; Science: Physics: Descriptive and experimental mechanics
Website: http://www.mdpi.com/journal/materials/

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