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Processing of Composite Cathode and YSZ Coatings for Solid Oxide Fuel Cells

[+] Author Affiliations
Zhigang Xu, Devdas Pai, Jag Sankar

North Carolina A&T State University

Paper No. IMECE2004-61012, pp. 153-160; 8 pages
doi:10.1115/IMECE2004-61012
From:
  • ASME 2004 International Mechanical Engineering Congress and Exposition
  • Materials
  • Anaheim, California, USA, November 13 – 19, 2004
  • Conference Sponsors: Materials Division
  • ISBN: 0-7918-4712-8 | eISBN: 0-7918-4178-2, 0-7918-4179-0, 0-7918-4180-4
  • Copyright © 2004 by ASME

abstract

In our research, composite cathodes of strontium-doped lanthanum manganite (LSM) and yttria-stabilized zirconia (YSZ) were produced by using slurry casting and sintering procedures. The slurry was prepared using ball milling. The time of ball milling was studied in terms of particle size and homogeneity of the powder in the slurry. The effect of the composition of the slurry on the microstructure was studied to obtain cathodes with desired porosity. The sintering process was also optimized to compromise the porosity, grain size, and strength of the cathodes. The YSZ coating was implemented using electrophoretic deposition in liquid phase. Different charging methods of the YSZ powder in the suspension was used and their results were compared. The microstructures of cathodes and YSZ coatings were characterized using scanning electron microscope (SEM).

Copyright © 2004 by ASME

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