Journal of Power Sources, Vol.195, No.13, 4252-4254, 2010
Preparation of supported SrCeO3-based membrane by spin coating method
SrCe0.9Y0.1O3-delta (SCY10) powder with a pure perovskite phase is prepared by solid-state reaction method. NiO is dispersed uniformly in SCY10 powder to fabricate NiO-SCY10 anode substrate. The starting powder, the mixture of SrCO3, CeO2 and Y2O3, is deposited directly on the green substrate instead of SCY10 powder by spin coating. After co-firing at 1300 degrees C for 3 h, the starting powder reacts to form SCY10 top layer on the substrate. SEM micrographs show that the top layer is defect-free and adheres well with the anode substrate without any delamination. A single fuel cell is assembled with anode-supported SCY10 membrane as electrolyte membrane and Ag as cathode. The electrochemical property of the fuel cell is tested with hydrogen as fuel in the temperature range of 600-800 degrees C. The open circuit voltage (OCV) reaches 1.05 V at 800 degrees C, and the maximum power density is 50 mW cm(-2), 155 mW cm(-2), 200 mW cm(-2) at 600 degrees C, 700 degrees C, 800 degrees C, respectively. (C) 2010 Elsevier B.V. All rights reserved.
Keywords:Proton conducting;Supported SrCe0.9Y0.1O3-delta membrane;Solid-state reaction method;Spin coating