Pore structure improvement in cermet for anode-supported protonic ceramic fuel cells

The porous cermet of Yb-doped BaZrO3 and nickel (BZYb-Ni) for anode-supported protonic ceramic fuel cells (PCFCs) was fabricated by compression molding following the liquid condensation process (LCP). The gas permeability of BZYb-Ni produced by LCP (BZYb-NiLCP) was greater than that of BZYb-Ni produced by a conventional drying method (BZYb-NiCDM) although their porosities were similar. The greater permeability of BZYb-NiLCP than that of BZYb-NiCDM is consistent with more efficient structures for gas flow; a smaller specific surface area, and a larger critical diameter for pores in BZYb-NiLCP than those for pores in BZYb-NiCDM.