Aerosol Deposition as a Promising Technique to Fabricating a Thin-film Solid Electrolyte of Solid Oxide Fuel Cells

摘要

In present work we developed and tested model anode-supported planar solid oxide fuel cells. We used commercially available 2-layered (current-collector and functional) anode supports. Thin-film electrolyte layer based on 8 mol.% yttria-stabilized zirconia (YSZ) was produced by aerosol deposition method using converging-diverging (de Laval) type nozzle. To provide the fabrication of pinhole-free gas-tight thin-film electrolyte coatings, the pre-treatment procedure of initial powders was developed. The optimal operating parameters of the deposition modes of the YSZ solid electrolyte of different thicknesses are determined. Morphology analysis of the obtained thin-film coatings showed that the application of these modes provides the fabrication of thin-film YSZ layer with thickness of a few microns possessed good adhesion to the anode support, gas tightness and uniformity thickness.