Local Evolution of Three-Dimensional Microstructure Morphology of Planar Anode-Supported SOFC

Thursday, 30 July 2015: 10:40
Boisdale (Scottish Exhibition and Conference Centre)
G. A. Brus (AGH University of Science and Technology), H. Iwai, Y. Otani (Kyoto University), A. Sciazko (AGH University of Science and Technology), M. Saito, H. Yoshida (Kyoto University), and J. S. Szmyd (AGH University of Science and Technology)
In this research a planar anode-supported cell was tested over the period of 3700 hours. The investigated cell was tested as a part of six cells stack with standard power output 100 [W]. The aging test was conducted at 800oC and under constant current 19.4 A to provide 90 W of initial power output. After the operation subsequent post-test analysis of the selected cell microstructure has been conducted using combination of Focused Ion Beam and Scanning Electron Microscopy (FIB-SEM). Obtained data was reconstructed into 3D images, based on which the microstructure parameters were obtained. The microstructure parameters were quantified at three different location in the selected cell; inlet (downstream), middle and outlet (upstream). The obtained results indicate strong non-homogeneous microstructure morphology change after long-term operation.