Preparation of BaZr0.1Ce0.7Y0.2O3-δ thin membrane based on a novel method-drop coating

The thin membrane of a BaZr0.1Ce0.7Y0.2O3-delta (BYCZ) was fabricated on the porous NiO-BYCZ anode substrate through a novel method-drop coating. The intact cell was assembled with the cathode of La0.7Sr0.3FeO3-delta/BYCZ and tested from 600 to 700 degrees C with humidified hydrogen (similar to 3% H2O) as the fuel and the static air as the oxidant. We investigated the influence of different contents of BYCZ in the slurry and different pre-fired temperatures to the open-circuit potential and performance of the prepared cells. The results showed that the cell with 5% (wt) BYCZ in the slurry and pre-fired temperature of 500 degrees C had the highest open-circuit potential which indicated the densest electrolyte and the highest power density. Double-layer-drop-coating with the anode functional layer was also adopted and improved the cell performance to 377 mW cm(-2) at 700 degrees C. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.