LSGM-based cells for IT-SOFC applications

Solid Oxide Fuel Cells have still many technical problems related to its high operating temperature (800-1000°C). The most recent studies deal with reducing the operation temperature increasing at the same time the durability of the device. The use of La<inf>0.8</inf>Sr<inf>0.2</inf>Ga<inf>0.8</inf>Mg<inf>0.2</inf>O<inf>3-?</inf> (LSGM) perovskite as electrolyte could be a very promising solution for IT-SOFC operating at 600°C. In this work, LSGM bilayers constituted by a thicker porous layer (namely the anode scaffold) and a dense electrolyte were produced by tape casting. The critical issues to obtain flexible and crack-free green tapes suitable for lamination were carefully examined. In particular, the nature and amount of pore former needed to obtain an anode scaffold with a porous network suitable for the catalysts impregnation process were deeply investigated.