554 / 2019-01-17 17:03:19

Conductivities of Cu/Ni-LSCM composite anode materials prepared by impregnation

Cu/Ni-LSCM, conductivities, impregnation

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Solid oxide fuel cell (SOFC) which is commonly recognized as one of the most promising fuel-to-electricity conversion devices, has some unique advantages over the traditional power generation technologies, including high efficiency, low greenhouse emissions and fuel flexibility. Anode material, which plays a significant part in solid oxide fuel cells. The structure and property of anode material directly affect the performance of SOFCs. In this paper, Cu/Ni-LSCM composite anode materials for solid oxide fuel cell were prepared by impregnation method. X-ray diffraction (XRD) patterns demonstrate that the samples have perovskite phase with Cu/Ni alloy on the surface. Scanning electron micrograph - energy dispersive spectroscopy (SEM-EDS) shows that the distribution of pores in the porous structure of LSCM is relatively uniform. Temperature programmed reduction (TPR) indicates that the overall reduction temperature of CuO/NiO-LSCM material decreases with increasing Cu content. Specific surface area (BET) was measured by BET test. The anode material porosity is measured by the Archimedes drainage method. The relationships between conductivities of Cu/Ni-LSCM and their structure were investigated through linear sweep voltammetry method and electrochemical impedance spectra (EIS). The effects of impregnation process on the structures and properties of Cu/Ni-LSCM composite anodes were investigated.