Stack solid oxide cell stack solid oxide

A stack of solid oxide obtainable by a process comprising the steps of: - depositing a layer of fuel electrode on a layer of fuel electrode support, - depositing an electrolyte layer comprising stabilized zirconia on the electrode layer fuel to provide an assembly of fuel electrode support, fuel electrode and electrolyte - optionally sintering the assembly of fuel electrode support assembly, fuel electrode and electrolyte to provide a pre-sintered half cell - depositing on the electrolyte layer of the half cell pre-sintered one or more layers of oxygen electrode comprising at least one of the one or more layers of oxygen electrode composition lanthanum-strontium-manganite and stabilized zirconia to provide a stack of solid oxide full and - sintering the one or more oxygen electrode layers together with the semi stack pre-sintered to provide a stack of solid oxide full sintered, wherein the one or more layers of oxygen electrode stack solid oxide full sinter is / are impregnated with manganese to obtain a stack of impregnated solid oxide with manganese and wherein the atomic ratio of manganese to lanthanum and strontium in the lanthanum manganite-strontium is higher than.