“…Regarding the second way, infiltration of a catalyst into a porous anionic conducting skeleton (for instance gadoliniumdoped ceria, GDC) is a very interesting method to shape the SOCs oxygen electrodes and to improve their electrochemical performances. Infiltration has been widely used to fabricate novel architectured oxygen electrode structures based on LSM [5,6], LSCF [7,8], LSBT [9,10] and Ruddlesden-Popper materials such as La n+1 Ni n O 3n+1 (n= 1, 2, 3)-YSZ [11,12] or Nd 2 NiO 4+δ [13,14].…”