High-performance anode-supported Solid Oxide Fuel Cells based on Ba(Zr0.1Ce0.7Y0.2)O3−δ (BZCY) fabricated by a modified co-pressing process

A modified co-pressing process was developed to fabricate anode-supported dense and uniform Ba(Zr0.1Ce0.7Y0.2)O3−δ (BZCY) electrolyte films (∼20 μm thick) from BZCY powders with different characteristics; the powders derived from a glycine nitrate process was used for the anode whereas the powders from solid state reaction for the electrolyte. The BZCY electrolyte films sintered at 1350 °C for 6 h reached a conductivity of ∼0.025 S cm−1 at 700 °C, similar to that of BZCY pellet sintered at 1550 °C for 10 h. Further, a test cell based on such an anode-supported BZCY electrolyte demonstrated peak power densities of ∼780 and ∼490 mW cm−2 at 700 and 600 °C, respectively.