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Structural and Electrochemical Properties of Pr1−xSrxCoO3−δ as a Cathode Material for Intermediate Temperature-Operating Solid Oxide Fuel Cell

[+] Author Affiliations
Jung Hyun Kim, Joongmyeon Bae

Korea Advanced Institute of Science and Technology, Daejon, South Korea

Paper No. FUELCELL2006-97159, pp. 653-658; 6 pages
doi:10.1115/FUELCELL2006-97159
From:
  • ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B
  • Irvine, California, USA, June 19–21, 2006
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4247-9 | eISBN: 0-7918-3780-7
  • Copyright © 2006 by ASME

abstract

Reducing operation temperature of Solid Oxide Fuel Cell (SOFC) may provide many advantages for material selections of sealing, interconnects and Balance-Of-Plant (BOP). This study focus on the advanced performance of another cathode material and the performance according to structure change about Pr1−x Srx CoO3−δ compositions (PSCs, x = 0, 0.3, 0.5 and 0.7). High temperature XRD measurement and electrochemical impedance methods were used to study the characteristics of the material as a cathode material for Intermediate Temperature-operating Solid Oxide Fuel Cell (IT-SOFC) application. Lattice parameters and crystal structures of PSCs as well as Area Specific Resistance (ASR) of PSCs on solid oxide electrolytes are discussed at various x values (x = 0, 0.3, 0.5 and 0.7) and temperatures. One of various compositions of PSC showed 0.17 Ωcm2 of ASR on 10% Gd-doped cerium oxide at 700°C.

Copyright © 2006 by ASME

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