Fabrication and structural properties of porous Cu–YSZ cermets for solid oxide fuel cells
2014
Kim, C.M. | Kim, J. (Jinchoon) | Park, K.
In this study, porous Cu–YSZ cermets with various Cu contents are fabricated and their crystal structure and morphological features are investigated by X-ray diffraction and scanning electron microscopy. Carbon black-containing CuO/Y2O3-stabilized ZrO2 (YSZ) composites exhibit a highly porous structure due to the evolution of CO and CO2 gasses during sintering. The porosity of the CuO/YSZ composites decreases with increases of the sintering temperature and CuO content. Highly porous Cu/YSZ cermets are fabricated by reducing the porous CuO/YSZ composites in (Ar+6% H2) atmosphere. Higher CuO content and higher sintering temperature reduce the porosity of Cu/YSZ cermets after reduction treatment. The microstructure and porosity of Cu/YSZ cermets as an anode material are remarkably affected by the CuO content, sintering temperature, and carbon black content. We believe that the porous Cu/YSZ cermets are a promising anode material for high performance of SOFC.
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