In order to improve the catalytic activity of Sr0.8La0.2TiO3 (SLT)-Ce0.9Gd0.1O1.95 (GDC) composite anodes, Pd was impregnatedas a co-catalyst using a glycine mediated impregnation method. When glycine was added into the Pd precursor solution, nanosizedPd particles with the average particle size being approximately 20 nm were homogeneously distributed onto the SLTGDCbackbone. The polarization resistance (Rp) was significantly reduced by the impregnation of Pd due to the enlargementof the triple phase boundary (TPB) length, which promotes ionic exchange reactions at the anode/electrolyte interface, as wellas the dissociation of H2 molecules. The maximum power density of the single cell also increased significantly as the amountof Pd increased. Moreover, the single cell with a Pd-impregnated SLT-GDC15 anode showed a comparable performance usingboth CH4 and H2 fuel, which indicates that the Pd-impregnated SLT-GDC composite anode can be used for hydrocarbonfueledSOFC as well.

Keywords: Solid oxide fuel cells, Composite anode, Oxide anode, Impregnation, Co-catalyst