Abstract
An La0.8Sr0.2MnO3 (LSM)/Sr0.88Y0.08TiO3 (SYT) dual layer interconnect was coated on an NiO-YSZ porous support via screen printing and co-firing processes. SYT and LSM single phase powders were synthesized by solid state reaction and Pechini method, respectively. The thickness of the dual layer was approximately 200μm. The LSM/SYT dual layer showed a good gas-tightness and had a uniform microstructure without cracks, delamination or warpage. No atomic inter-diffusion between the dual layer and the NiO-YSZ support was detected, suggesting that SYT is phase compatible with NiO-YSZ. The area specific resistance (ASR) of the LSM/SYT/Ni-YSZ sample was 0.19Ωcm2 at 800°C under oxidizing/reducing atmospheres; this value was lower than that of the SYT/Ni-YSZ sample.
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