Effects of impregnating palladium on catalytic performance of LSCF-GDC composite cathodes for intermediate temperature solid oxide fuel cells
By Liu, Yihui; Bi, Jiaxin; Chi, Bo; Pu, Jian; Jian, Li
Published in International Journal of Hydrogen Energy
2016
Abstract
Abstract The effects of palladium introduction on the catalytic activity of {LSCF} composite cathodes are investigated by comparing the performance of LSCF-GDC and Pd-LSCF-GDC cathodes. Pd-LSCF-GDC cathodes were prepared by impregnation of Pd and {LSCF} precursor into {GDC} scaffold separately in two steps. The electrochemical results show that the introduction of Pd promotes the catalytic activity of LSCF-GDC cathodes under the condition of both heating and cooling processes. The promotion is related to the existing state of Pd with {LSCF} under different conditions. According to in-situ high temperature {XRD} and {XPS} results, the PdO phase is stable at temperature below 700