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Fabrication and Characterization of Thermoelectric Oxide La1−xSrxCoO3 (x∼0.05) Nanofibers

[+] Author Affiliations
Weihe Xu, Shiyou Xu, Dante Smiriglio, Yong Shi

Stevens Institute of Technology, Hoboken, NJ

Paper No. IMECE2009-11849, pp. 247-250; 4 pages
doi:10.1115/IMECE2009-11849
From:
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 14: Processing and Engineering Applications of Novel Materials
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4387-1 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME

abstract

The P-type perovskite oxides La1−x Srx CoO3 (x∼0.05) are a promising group of complex oxide thermoelectric materials. The thermal electric properties of these complexes are expected to increase significantly when their dimension was reduced to nano scale. In this project, the La1-x Srx CoO3 (x∼0.05) nanofibers, with diameters in the range of ∼30–80 nm, were prepared by the electrospinning process. Various substrates such as aluminum foil, silicon dioxide, and a specially designed tester were used to collect and anneal the nanofibers. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were conducted to characterize these thermoelectric nanofibers. Finally, a thermoelectric property tester device was developed and used to measure the voltage output of the nanofibers due to the Seebeck effect. The detected signal was at the mV level and the Seebeck coefficient was positive.

Copyright © 2009 by ASME

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