Effect of GDC buffer layer in SOFC technology

Anode support cell is one the most common configuration fuel cell used in the SOFC technology. The major problem of this technology is the high reactivity between electrolyte (YSZ) and cathode (LSC). One solution to overcome this problem consists in applying a buffer layer to avoid reactivity phenomenon. Three different techniques were used to synthesize a Gadolinia doped Ceria (GDC) buffer layer. A significant improvement of the cell performances can be obtained replacing the screen printed Co-GDC buffer layer by a dense GDC film deposited via reactive magnetron sputtering.