Innovative microstructure and architecture in efficient La2-xPrxNiO4+d based SOFC Cathodes

Reference	Presenter	Authors (Institution)	Abstract
06-049	Elisabeth Djurado	Djurado, E.(Univ. Grenoble Alpes); Khamidy, N.I.(Univ. Grenoble Alpes); Sharma, R.K.(Univ. Grenoble Alpes);	Solid oxide fuel cells operating at intermediate temperature (~600 °C) are efficient energy-conversion systems for electrical power generation. In order to design novel optimized cathodes with improved mixed ionic and electronic conductivity properties for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFC), it is of high importance to control (i) the electrode microstructure and composition to obtain large surface areas, increasing the number of active sites for the oxygen reduction reaction (ORR), (ii) the electrode/electrolyte interface to enhance the charge transfer. In this talk, layered perovskite-related oxides, such as Ln2NiO4+d are deposited on Ce0.9Gd0.1O2-d (CGO) using screen printing (SP) and electrostatic spray deposition (ESD), a non-conventional fabrication technique for obtaining unique nanostructured cathodes. The role of the electrode/electrolyte interface has been evaluated on the cathodic performance by impedance spectroscopy using (i) a dense thin (~ 100 nm) pure LnNO sub-layer and (ii) a thicker (~3 microns) porous composite CGO/LnNO sub-layer.
<< Back