| Abstract Scope |
This presentation focuses on the fabrication and performance evaluation of solid oxide fuel cells (SOFCs) utilizing proton-conducting BaZr0.1Ce0.7Y0.2O3-δ (BZCY172) ceramics as the electrolyte. We investigated the effect of anode functional layer (AFL) on electrolyte sintering behaviors and performances. When the AFL was introduced, the anode became slightly less porous, suggesting that the AFL promoted interfacial sintering and improved structural integration between the anode and electrolyte layers. More importantly, the electrolyte grain size increased significantly when the AFL was applied, with an increase of approximately 30% for sintering temperatures above 1450℃. Larger grains generally indicated improved sintering and reduced grain-boundary density. A more critical observation was the change in impurity or segregated grain area, without the AFL, the amount of impurity particles increased noticeably when the sintering temperature exceeds 1450℃. In contrast, the application of the AFL dramatically reduced these segregated particles, indicating a substantial improvement in electrolyte surface purity. |
