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Spray Coating of Electrolyte Films for Solid Oxide Fuel Cells

[+] Author Affiliations
J. Persky, D. Beeaff, S. Menzer, G. Coors

CoorsTek Inc., Golden, CO

D. Storjohann

Colorado School of Mines, Golden, CO

Paper No. FuelCell2008-65100, pp. 39-45; 7 pages
doi:10.1115/FuelCell2008-65100
From:
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology
  • Denver, Colorado, USA, June 16–18, 2008
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4318-1 | eISBN: 0-7918-3822-6
  • Copyright © 2008 by ASME and CoorsTek

abstract

Fabrication of defect free co-sintered electrolytes with thickness between 12 μm and 40μm has been demonstrated on planar and tubular cells produced via a spray coating process. Leak testing using a helium leak method showed low diffusional leak rates for cells using optimized spray parameters. The electrolytes were characterized using scanning electron microscopy to qualitatively assess pin holes. Average open circuit voltages (OCVs) of 1080 mV were obtained on tubular cells with spray-coated electrolytes using 3% humidified hydrogen as the fuel. This paper presents spray coating as a viable, cost effective method for electrolyte application in co-fired, anode supported SOFCs.

Copyright © 2008 by ASME and CoorsTek

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