Document Detail


Nanostructured AgPb(m)SbTe(m+2) system bulk materials with enhanced thermoelectric performance.
MedLine Citation:
PMID:  18327945     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Nanostructured Ag0.8Pbm+xSbTem+2 (m = 18, x = 4.5) system thermoelectric materials have been fabricated by combining mechanical alloying (MA) and spark plasma sintering (SPS) methods followed by annealing for several days to investigate the effect on microstructure and thermoelectric performance. It was found that appropriate annealing treatment could reduce both the electrical resistivity and the thermal conductivity at the same time, consequently greatly enhancing the thermoelectric performance. A low electrical resistivity of 2 x 10-3 Ohm-cm and low thermal conductivity of 0.89 W m-1 K-1 were obtained for the sample annealed for 30 days at 700 K. The very low thermal conductivity is supposed to be due to the nanoscopic Ag/Sb-rich regions embedded in the matrix. A high ZT value of 1.5 at 700 K has been achieved for the sample annealed for 30 days.
Authors:
Min Zhou; Jing-Feng Li; Takuji Kita
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Publication Detail:
Type:  Journal Article     Date:  2008-03-08
Journal Detail:
Title:  Journal of the American Chemical Society     Volume:  130     ISSN:  1520-5126     ISO Abbreviation:  J. Am. Chem. Soc.     Publication Date:  2008 Apr 
Date Detail:
Created Date:  2008-03-26     Completed Date:  2008-04-25     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503056     Medline TA:  J Am Chem Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  4527-32     Citation Subset:  -    
Affiliation:
State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
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