Fig. 3: Microstructural analyses of the monolith.
From: Production of a monolithic fuel cell stack with high power density

a Cross-sectional SEM image showing the SRU monolith with a gas channel enlarged. The annotations E, El, and IC correspond to electrode, electrolyte, and interconnect, respectively. b High-magnification cross-sectional SEM images of the cell layers. c Cross-sectional SEM images of the SRU monoliths after oxidation in air or 80% H2O–20% H2 for 100 h at 650 °C. Note the scale difference.