TY - JOUR
T1 - Laser machining of LaNi0.6M0.4O3−δ (M: Co, Fe) dip-coated on a Fe-22Cr mesh material to obtain a new contact coating for SOFC
T2 - interaction between Crofer22APU interconnect and La0.6Sr0.4FeO3 cathode
AU - Morán-Ruiz, A
AU - Vidal, Karmele
AU - Larrañaga, Aitor
AU - Porras-Vázquez, Jose
AU - Slater, Peter
AU - Arriortua, María Isabel
PY - 2015/7/13
Y1 - 2015/7/13
N2 - A Fe–22Cr mesh was dipped into a ceramic (LaNi0.6M0.4O3−δ; M: Co, Fe) slurry to form a metallic/ceramic material as contact coating for solid oxide fuel cells (SOFCs). This composite was directly adhered to a Crofer22APU channeled interconnect and micro-holes were performed on coating using a femtosecond laser. Then, La0.6Sr0.4FeO3 (LSF) cathode was spray deposited on top of this ablated system to analyze the formed structures in terms of the electrical performance, processing reproducibility and long-term behavior at 800 °C. The adequate reproducibility of the process was confirmed through area specific resistance (ASR) testing on four replicas for each system. After long-term treatment, the chromium diffusion within both the interconnect and mesh of the composite was quantitatively analyzed using energy dispersive X-ray spectroscopy (EDX). The laser irradiated composite showed short-range damage, which was limited to the formation of iron and chromium oxides due to the evaporation and oxidation of the mesh.
AB - A Fe–22Cr mesh was dipped into a ceramic (LaNi0.6M0.4O3−δ; M: Co, Fe) slurry to form a metallic/ceramic material as contact coating for solid oxide fuel cells (SOFCs). This composite was directly adhered to a Crofer22APU channeled interconnect and micro-holes were performed on coating using a femtosecond laser. Then, La0.6Sr0.4FeO3 (LSF) cathode was spray deposited on top of this ablated system to analyze the formed structures in terms of the electrical performance, processing reproducibility and long-term behavior at 800 °C. The adequate reproducibility of the process was confirmed through area specific resistance (ASR) testing on four replicas for each system. After long-term treatment, the chromium diffusion within both the interconnect and mesh of the composite was quantitatively analyzed using energy dispersive X-ray spectroscopy (EDX). The laser irradiated composite showed short-range damage, which was limited to the formation of iron and chromium oxides due to the evaporation and oxidation of the mesh.
KW - SOFC
KW - Composite contact material
KW - Femtosecond laser
KW - Contact resistance
KW - Degradation
U2 - 10.1016/j.ijhydene.2015.04.134
DO - 10.1016/j.ijhydene.2015.04.134
M3 - Article
SN - 0360-3199
VL - 40
SP - 8407
EP - 8418
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 26
ER -