Abstract
In order to clarify the reaction mechanism on SOFC cathode, it is necessary to evaluate the contribution of oxygen bulk diffusion of electrode materials. In this work, the authors prepared dense Sr-doped lanthanum manganites (LSM) films on yttria stabilized zirconia (YSZ) substrates by a laser ablation method using KrF eximer laser. Scanning electron microscopy measurements indicated that dense LSM films (6--32{micro}m) were formed. Using these samples, electrochemical properties (oxide-ionic conductivity and ac impedance) were measured in Ar-O{sub 2} atmospheres.
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