Redox behaviour and ageing of GDC-Co cermets: A comparison between lamellar and conventional cermets

摘要: Abstract Lamellar cermets produced from directionally solidified eutectic ceramic precursors are now being considered an alternative option to conventional in SOFC technology. The reduction behaviour of lamellar and oxide–oxide ceramics the same composite, but prepared through two different methods, as well ageing effects resulting cermet have been analysed with a view its possible application anode. On one hand, composed gadolinium doped ceria (GDC) cobalt oxide (CoO) their composition by directional solidification laser floating zone technique (LFZ). other fine wet chemistry route order assure production small homogeneous grain size samples (conventional cermets). In both cases, kinetic experiments 500–750 °C temperature range performed. show competing process that is not thermally activated this has linked existence high number low energy interfaces material. Evolution electronic conductivity porosity was used evaluate stability under operating conditions. sense, better performance.