Effects of impregnating palladium on catalytic performance of LSCF-GDC composite cathodes for intermediate temperature solid oxide fuel cells
By Yihui Liu and Jiaxin Bi and Bo Chi and Jian Pu and Li Jian
Published in International Journal of Hydrogen Energy
2016
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