Development of Multilayer Anodes for Proton-conducting Solid Oxide Fuel Cells

Abstract

Advanced cermet electrodes of Ni-BaCeO.9Y0.1O2.95, suitable for Intermediate Temperature PCFC, have been elaborated using gelling starch as pore forming agent. SEM and mercury porosimetry measurements show a strong dependence of the microstructure upon the starch content. As the starch content increase, a gradual creation of percolating starch network is clearly shown. An half cell showing a gradient of porosity and a thin electrolyte dense layer was successfully obtained by a simple co-pressing and co-sintering process. The polarization ASR (0.13 Ohm.cm2) is obtained for the cell architecture investigated in this work