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Phosphine Effects on Ni-Based Anode Material and Related SOFC Button Cell Performance Investigation

[+] Author Affiliations
Huang Guo, Gulfam Iqbal, Bruce S. Kang

West Virginia University, Morgantown, WV

Paper No. FuelCell2010-33187, pp. 287-291; 5 pages
doi:10.1115/FuelCell2010-33187
From:
  • ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 1
  • Brooklyn, New York, USA, June 14–16, 2010
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-4404-5 | eISBN: 978-0-7918-3875-4
  • Copyright © 2010 by ASME

abstract

Phosphine (PH3 ) is one of the trace contaminants found in coal-derived syngas that degrade the solid oxide fuel cells (SOFCs) anode structural properties and electrochemical performances. In this research, the SOFC button cells are exposed to ppm level of PH3 in dry and moist hydrogen under OCV and loading conditions to study PH3 poisoning effect on SOFC performance. A modified Sagnac optical system is utilized for in-situ SOFC anode surface IR emission measurements as a function of current density, along with the cell electrochemical performance investigation. The experimental results indicate that the Ni-based SOFC anode is more susceptible to degradation due to PH3 in moist hydrogen than in dry hydrogen condition. The degradation effects of PH3 on the SOFCs anode are also analyzed by post experiment characterization using SEM, EDX, and XRD.

Copyright © 2010 by ASME

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