The 61%NiO þ 39%Zr0.84Y0.16O1.92 (NiO-YSZ) and 56%NiO þ 44%Zr0.83Sc0.16Ce0.01O1.92 (NiO-CeSSZ) composite
powders have been prepared using two-steps and one-step combustion synthesis, respectively.
The Ni-YSZ anode substrate with a low level of electrical resistance (less than 1 mOhm cm) and porosity
of about 53% in the reduced state was fabricated. The functional layer of the anode with the high level of
electrochemical activity was made of NiO-CeSSZ. The single anode-supported solid oxide fuel cell with
the bi-layer Ni-cermet anode, Zr0.84Sc0.16O1.92 film electrolyte and the Pt þ 3% Zr0.84Y0.16O1.92 cathode was
fabricated. The power density and the UeI curves of the fuel cell at initial state and after impregnation of
the cathode and anode by praseodymium and cerium oxides, respectively, have been measured at
different temperatures. The maximum of power density of the initial fuel cell was 0.35 W cm2 at
conditions of wet hydrogen (air) supply to the anode (cathode) at 900 C. After the electrodes were
impregnated, the value of power density increased by seven times and was approximately 2.4 Wcm2 at
0.6 V. It was suggested that after the electrodes impregnation the polarization resistance of the fuel cell
was determined by the gas diffusion in the supported anode.