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Examining Effects of Sulfur Poisoning on Ni/YSZ Solid Oxide Fuel Cell Anodes Using Synchrotron-Based X-Ray Imaging Techniques

[+] Author Affiliations
William M. Harris, Jeffrey J. Lombardo, George J. Nelson, Wilson K. S. Chiu

University of Connecticut, Storrs, CT

Barry Lai, Steve Wang, Joan Vila-Comamala

Argonne National Laboratory, Argonne, IL

Mingfei Liu, Meilin Liu

Georgia Institute of Technology, Atlanta, GA

Paper No. IMECE2013-63972, pp. V06BT07A019; 4 pages
doi:10.1115/IMECE2013-63972
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 6B: Energy
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5629-1
  • Copyright © 2013 by ASME

abstract

Fuel flexibility is widely considered one of the most significant advantages of solid oxide fuel cells (SOFC). However, the presence of small amounts of sulfur or other impurities in the gas stream can have a serious impact on cell performance [1–10]. Under certain conditions, hydrogen sulfide (H2S), even at the ppm level, can lead to the formation of bulk nickel-sulfides within the conventional Ni–yttria-stabilized zirconia (Ni-YSZ) anode of SOFC’s [9]. Understanding the distribution of these sulfides is critical to describing their effects on the electrochemical activity of the cell.

Copyright © 2013 by ASME

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