Abstract
Mesoporous nickel-ceria cermets were synthesized and electrically characterized as anodes for intermediate-temperature solid oxide fuel cells using Ce0.8Gd0.2O1.9 as the material for the electrolyte. Mesoporous nickel-ceria cermets were prepared from silica hard templates, with KIT-6 structure, and a multistep impregnation process. A comprehensive (micro)structural analysis was carried out in order to determine the stability of the replicated mesoporous cermet at the typical processing temperatures employed in solid oxide fuel cells fabrication, i.e. from 900ºC to 1100ºC. Electrical characterization of the mesoporous cermets in symmetrical cells was carried out in humidified 5%H2 in N2 atmosphere. Targeted values of electrode/electrolyte area specific resistance were achieved in the intermediate temperature range showing the suitability of the here-presented mesoporous approach for developing a new class of high performance anodes for IT-SOFC.
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