Abstract
A defect-free electrolyte film is an essential component for a solid oxide fuel cell. Fabrication often requires the electrolyte film to be sintered under the constraint of a non-sintering (effectively rigid) substrate and large defects can be formed as a result of this constrained sintering. A full understanding of the formation of such large defects is still lacking. In this work, particle packing uniformity in screen-printed electrolytes was investigated using photoluminescence spectroscopy mapping on the green film in which α-Al2O3 particles had been introduced by impregnation. This revealed the existence of low density domains of size 30-50 µm in the green film. The mechanical properties of the green films were investigated by nano-indentation, which showed the polymeric binder used in screen-printing can significantly increase the creep of green film. Defects were also generated by indentation and their evolution during sintering was examined and is discussed in detail.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
