Electrolyte of the solid oxide fuel cells deposited by atmospheric plasma spraying of 8 mol.% yttria (8YSZ), is not applicable in as sprayed condition. Optimization of the plasma spraying process parameters or application of feedstock powder, consisting of 8YSZ and 5wt.% alumina improves the problem of gas leakage through electrolyte layer, whereas provides no solution to the problem of electrodes short-circuiting. Infiltration of deposited electrolyte layer with a thin aqueous solution of nitrate precursors of 8YSZ for one time is a solution to high gas permeability; however three infiltration cycles are required to omit the risk of electrodes short circuiting thoroughly.
Densification of Plasma Sprayed SOFC Electrolyte Layer Through Infiltration With Aqueous Nitrate Solution
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Mirahmadi, A., and Valefi, K. (December 19, 2011). "Densification of Plasma Sprayed SOFC Electrolyte Layer Through Infiltration With Aqueous Nitrate Solution." ASME. J. Fuel Cell Sci. Technol. February 2012; 9(1): 011008. https://doi.org/10.1115/1.4004503
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