抄録
Electrostatic spray deposition (ESD) was applied to fabricate of a dense and thin electrolyte layer of solid oxide fuel cell (SOFC). Improvement of porosity of an anode substrate is one of effective means for high performance. Cracking had occurred in electrolyte membrane due to the difference of shrinking ratios between an electrolyte deposition layer and an anode during high-temperature sintering. Polyethylene glycol (PEG) was mixed within YSZ colloid solution in order to change the shrinking ratio of the electrolyte membrane during high-temperature sintering. The presence of PEG in the electrolyte deposition layer was confirmed from the observation of the layer deposited onto the cover glass. The electrolyte deposition layer made of YSZ-PEG colloid solution was thinner than that made of YSZ colloid solution. No micro-crack was observed on the electrolyte membrane made of YSZ-PEG colloidal solution after high-temperature sintering.
