A single cell for a solid oxide fuel cell and a solid oxide fuel cell
using the same practicable and excellent in generation performance and
durability, wherein a fuel electrode including a cermet of a catalyst and
a second solid electrolyte with oxide ion conductivity at 1000.degree. C.
of 0.20 S/cm or more is bonded to one side of a solid electrolyte plate
with the conductivity of 0.07 S/cm or more and bending strength of 700
MPa or more, and an air electrode including a compound of perovskite type
transition metal oxide with a third solid electrolyte is bonded to the
other side. A surface of the fuel electrode is coated with a layer, and
an air electrode surface is coated with a layer, and an aqueous solution
where a noble metal compound is dissolved in water is impregnated into
the air electrode.