Journal
SOLID OXIDE FUEL CELLS 12 (SOFC XII)
Volume 35, Issue 1, Pages 2151-2160Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3570207
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- Air Force Research Laboratory (AFRL), Wright-Patterson Air Force Base, Ohio
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We report the cathode layer optimization efforts undertaken to improve the cell performance of a previously reported (10) aerosol jet printed SOFC with strontium doped lanthanum manganite (LSM) based cathode. The cathode current collection layer, LSM with different thicknesses, solids loading in printing ink, and sintering temperature, were examined. These parameters were observed to have a significant impact on the cell performance, changing the maximum power density of cells from 200-460 mW/cm(2) at 850 degrees C, depending on the processing conditions. Low voltage scanning electron microscopy was used to clearly distinguish the different phases of the composite LSM/YSZ layer. This method was used as a diagnostic tool to qualitatively assess the feasibility of on the fly mixing of the individually aerosolized inks. Cells with printed gadolinia doped ceria (GDC)-lanthanum strontium cobalt ferrite (LSCF) cathodes showed a performance, about twice that of cells with LSM cathodes.
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