Effect of NiO/YSZ compositions on the co-sintering process of anode-supported fuel cell

Abstract

Effect of NiO/YSZ compositions on the co-sintering process of anode-supported fuel cell was researched. The green YSZ layer was fabricated by modifying electrostatic powder coating, and the relative density is about 52%. After co-firing at 1400 °C for 5 h, the sample of YSZ film based on the 1000-NY support (pre-calcinated NiO 60 wt.%, YSZ 40 wt.%) is concave due to the mismatch of shrinkages between the YSZ film and anode support and there exist cracks on the film. Dense YSZ films based on the NY-20P (NiO 48 wt.%, YSZ 32 wt.% and graphite 20 wt.%) support were fabricated after co-firing at 1400 °C for 2 h. The OCV and the peak power density of a single cell with a 15 μm thick YSZ film based on the NY-20P support are 1.09 V and 315 mW/cm 2 at 800 °C, respectively.